Categories
BLOG

growstones home depot

Hydroponics

Please refine your filter selections, select a different vehicle, or select Show All >

“, “noResultsEtiresWithoutVehicle”:”Sorry, there are no results for .

Please refine your filter selections, or select Show All >

DOWNLOAD THE APP

‡ Total savings reflects sale price and instant rebate. Government of Canada Energy Savings Rebate Program get 25% Instant Rebate on selected ENERGY STAR certified dehumidifiers, smart thermostats and air purifiers. Taxes payable on price before rebate. Valid until September 30, 2020. Funded by the Government of Canada. Available in Ontario only. See details in store.

Financing available is “Equal payments, no interest” for 24 months (unless otherwise stated) and is only available on request, on approved credit and on purchases of $150 (unless otherwise stated) or more (Gift Cards excluded) made with your Triangle credit card at Canadian Tire, Sport Chek, Mark’s, L’Équipeur, Atmosphere, Sports Rousseau, Hockey Experts, L’Entrepôt du Hockey and participating Sports Experts. Interest does not accrue during the period of the plan. However, if we do not receive the full minimum due on a statement within 59 days of the date of that statement, or any event of default (other than a payment default) occurs under your Cardmember Agreement, all special payment plans on your account will terminate and (i) you will then be charged interest on the balances outstanding on such plans at the applicable regular annual rate from the day after the date of your next statement, and (ii) the balances outstanding will form part of the balance due on that statement. There is no administration fee charged for entering into a special payments plan. Each month during an equal payments plan you are required to pay in full by the due date that month’s equal payments plan instalment. Any unpaid portion not received by the due date will no longer form part of the equal payments plan and interest will accrue on that amount from the day after the date of your next statement at the applicable regular annual rate. Offer subject to change without notice.

Additional information for residents of Quebec only: The regular annual rate for persons applying for the Triangle Mastercard and the Triangle World Elite Mastercard is 22.99% for cash transactions and related fees and 19.99% for all other charges. Some applicants may receive a higher or lower regular annual rate depending on a credit evaluation. The minimum payment is the sum of (a) the greater of: (i) interest and fees shown on your statement + $10; or (ii) 5% of the New Balance, excluding amounts on special payment plans, (b) any balance over your credit limit, (c) any amounts past due not included in (b) above, and (d) the amount of any equal payments plan instalments then due. Balances under $10 are due in full. For residents of Quebec, the period between the statement date and the due date for payment is 26 days. The billing period covered by each statement can be from 28-33 days. The Triangle Mastercard and the Triangle World Elite Mastercard do not have an annual fee. Examples of borrowing costs (rounded to the nearest cent) assuming that all charges are purchases bearing interest at the regular annual rate of 19.99%, a 30 day month, no charges made on special payment plans and no other fees, additional payments or other changes are:

If your average balance is: $100 $500 $1000 $2000
Total monthly credit charges will be: $1.64 $8.22 $16.43 $32.86

ƒ Additional Information for the Triangle Mastercard:

† In the form of electronic Canadian Tire Money ® (CT Money ® ). You cannot collect paper Canadian Tire Money on bonus offers. Any bonus multiplier is based on the base rate of collecting CT Money. Not all items sold at Canadian Tire earn CT Money. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. CT Money is collected on the pre-tax. Bonus CT Money collected from online orders will be applied to the member’s Triangle Rewards™ account within 5 weeks of the purchase date. Terms and Conditions apply. Visit https://triangle.canadiantire.ca/en.html for more information.

®/TM Unless otherwise noted, all trademarks are owned by Canadian Tire Corporation, Limited and are used under licence.
®/TM Mastercard and World Mastercard are registered trademarks, and the circles design is a trademark of Mastercard International Incorporated.

®/TM Mark’s is a registered trademark of Mark’s Work Warehouse Ltd, used under licence

®/TM Sport Chek is a registered trademark of FGL Sports Ltd, used under licence.

◊ Pricing, selection, and availability of in-store clearance items are determined by each store. Items may be display models or not exactly as shown and may not be available in all stores. Quantities may be limited. Contact your store for more information. We reserve the right to limit quantities. Sorry no rainchecks (excluding Quebec).

‡‡ Shipping fees apply. Shipping fees and delivery times vary depending on location, size and weight of the item(s) and is only available within the province of the Canadian Tire retail location (“Store”) from which the item(s) was purchased. Bulk items will only be delivered within a 100km radius of the Store. Not available in Recontre East, NL. Conditions and restrictions apply. Visit https://www.canadiantire.ca/en/ship-to-home.html for more information.

1 Excludes Diesel. Additional fees and charges will apply for vehicles that require more than 5L of oil. Additional oil filter charges will apply. Eco fees, taxes and additional fees where applicable, are extra. Coupon valid for one-time use only. Coupon has no cash value and must be presented and surrendered at time of redemption. Not valid in conjunction with any other offer, coupon or discount. One coupon per vehicle. We reserve the right to limit the number of coupons redeemed per person. Limited time only. Altered or modified coupons will not be accepted. Coupon valid for intended recipient only. Some restrictions apply. See in store for details.Offer valid January 31- February 27, 2020.
2 Standard Message & Data rates apply. You can withdraw your consent to receive text messages about Canadian Tire Auto offers at any time by texting STOP to 38667. Contact us at P.O. Box 2000, Welland, ON L3B 5S3 or 1-800-387-8803 or [email protected]
3 You will receive electronic messages about Canadian Tire Auto products, tips and services that may be of interest to you from Canadian Tire Corporation, Limited. You may unsubscribe at any time.

∆∆ The Triangle Rewards Program is owned and operated by Canadian Tire Corporation, Limited. Triangle™ Mastercard®, Triangle™ World Mastercard® and Triangle™ World Elite Mastercard® are issued by Canadian Tire Bank. Rewards are in the form of electronic Canadian Tire Money® (CT Money®). To collect bonus CT Money you must present a Triangle Rewards card/key fob, or use any approved Cardless method, at time of purchase or pay with a Triangle credit card. You cannot collect paper Canadian Tire Money on bonus offers. Any bonus multiplier is based on the base rate of collecting CT Money (0.4%), and will be added to whatever the Member would otherwise collect, without the bonus. Example: On a $100 (pre-tax) purchase with a 30X bonus multiplier a Member would earn a bonus $12 in CT Money (30 X .4% X $100). The 40X for Triangle Mastercard, World Mastercard and World Elite Mastercard customers consists of the 10X everyday plus a 30X bonus. Not all items sold are eligible to earn CT Money or to be redeemed for. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money collected from online orders will be applied to the Member’s Triangle Rewards Account within five weeks of the purchase date. No rainchecks.

†† $25 GIFT CARD: Total qualifying purchase must be $125 or more before applicable taxes and shipping fees and must be paid for using Masterpass. Purchasing of gift cards cannot be used towards qualifying purchase amount. $25 Gift Card will be mailed to you within 8 weeks of your qualifying purchase. The Gift Card is only redeemable for merchandise and services at Canadian Tire retail stores or at Gas+ locations. The Gift Card may not be exchanged for cash, used to purchase other gift cards or applied as a payment on any Canadian Tire credit account. Applicable taxes will be charged on the total transaction value before deducting the Gift Card value. Canadian Tire and Mastercard International Incorporated are not responsible for replacing the value on this Gift Card if it is lost, stolen destroyed, damaged or used without your knowledge or consent.

Unless otherwise noted, all trademarks are owned by Canadian Tire Corporation, Limited.

®Mastercard and Masterpass are registered trademarks of Mastercard International Incorporated.

Start indoor growing with hydroponic garden systems from Canadian Tire. Shop seed plugs, grow pots, lights, nutrients and more online; pick up at 500+ stores.

Should I use Lavarocks or Expanded Clay?

Gravel, sand, perlite, rockwool, oasis cubes, coco, expanded clay (?poprocks? or Hydroton/Groton/ L.E.C.A. and other names), and lava rocks are common choices for Hydroponic mediums.

Lava rock and poprocks are popular as they are inert, do not absorb water, provide good aeration, are Ph neutral, and can be re-used.

Which is better?

Both of these mediums have advantages and disadvantages, depending on the system and requirements. Lava rocks work better in some systems, poprocks in others. They are good for drip, nft, flood&drain and for filling mesh pots.

Both types should go into a system that irrigates frequently, as Hydroton and lava rocks are non-porous and have little water-holding capacity. Both types should be pre-washed and sterilized to remove dust & mold.

Lavarocks:

Lavarocks are a cheap and readily available medium. They are good for large bucket grows where stability is a necessity.

(Aiptasia)”… consists of feathered basalt which is pH neutral. Basalt can carry trace metals, and my big lava rocks rust from the trace metals…”

(Snaps_Provolone) “Lava rock is chunks of red, porous (VERY porous!) basaltic (volcanic) rock. I’ve purchased it both by the bucketful, and by the bag at any place that sells landscaping materials. It is much lighter than, say, peagravel, but still rather heavy.

Only rockwool (MUCH more $ than lava rock) has more air/nutrientfilm capacity. Lava rock has REAL good capillary action too. Once wetted (I use flood-drain/ebb flow), it holds VAST amounts of water, while affording roots WAY more space to devolop than rockwool EVER can.”

Lava rock is good for ebb-flow/flood-drain, or top-drip systems, but can also be used successfully in an airated standing solution.

I still prefer Hydroton though, it stays moist longer and lacks that sharpness that tends to be harmful to soft tissue..”

Heavy. Roots will become damaged if a plant shifts; heavier lava rocks will help stabilize a large plant, preventing it from leaning or shifting during growth.

Chemically inert and reusable. Does not absorb water.

Lava rocks ?lock? together to give a more solid and stabile medium to plant in. Large plants are less likely to shift.

Easy to find, usually inexpensive

Lava rock come in large, medium and pellet sizes.

Individual rocks can be hand-placed to anchor air stones, drip lines, stakes, etc. Stakes embedded into the rocks will be solid.

Lavarocks can take a beating and not fragment or crush easily

Lavarocks need to be pre-soaked to clean them of grit and stabilize the pH: (raygun) “if you use the lava rocks just make sure that you rinse well and soak them in ph balanced h2o for 3-5 days then rinse and use.”

Lava rocks are a pita to clean. They have irregular surfaces and micropores that roots and bacteria love to fill. 100% sterilization is never guaranteed. Some growers consider them one-grow disposable.

(the colonel) “i find it easier to just buy new lavarock and rinse/clean it all than to reuse it: scrub each individual lava rock clean off all traces of root, and then disinfect and then rinse real well to get all the disinfectant chemical out.. but thas just me”

Lava rocks are heavy. This makes everything heavier, harder to haul/move, and more expensive to ship.

Lava rocks may contain traces of heavy metals, which may cause nutrient deficiencies and pH swings.

Irregular rock shapes provide uneven aeration and wetting in the rootzone. Roots will be less able to penetrate evenly throughout the medium

(raygun) “I did not like using the clay by itself as it did not disperse the ater from my drip tube and I ended up with dry spots in my pots. The lava roxs are all shapes and sizes which help change the path of the falling water.”

More difficult to fill containers

Expanded clay / Hydroton

(Son-T) ?Hydroton: This Lightweight Expanded Clay Aggregate (L.I.C.A.) is manufactured exclusively at high-tech kilns in Germany and is used as a soil replacement in hydroponics. Composed of shale that is pelletized and fired, Hydroton holds water extremely well and transmits it effectively. The pellets are uniform in size and have an attractive, natural appearance. Hydroton is chemically inert, has neutral pH, is reusable, clean and odorless.?

(nuniabiz) “clay balls at like 2800 degrees which expands all the little bubbles in the clay making the surface area something on the order of 100 times greater theres for holdin more o2 and wicking more H2o purrrrrfect”

The high temperature sterilizes the Hydroton, but mold can still form in the bags due to condensation and breaks.

(OzHornet) “marble-sized orange/brownish balls you can get from nurseries or hydro stores – often used in aeroponics; very cheap”

Poprocks are the preferred medium for hydroponics.

Expanded clay is much easier to clean. The round balls of clay have a smooth surface coating that can be cleaned of roots and bacteria.

Chemically inert and reusable

Different sizes available

Lighter than lava rock

Poprocks are more uniform in size & shape. They can be poured into containers, and they fill containers evenly.

The round pebbles do not compress or touch. The uniform space between the pebbles provides even aeration and wetting throughout, allowing roots to fully grow into the medium. The clay surface repels water, but surface tension coats each clay ball in a thin coat of water ? perfect conditions for roots. Cracked rocks absorb water like a sponge.

The round pebbles have more surface area than the flatter lava rocks, proving more area for roots to cling to.

Can be more difficult to source

Poprocks are round and as such are less stable to plant in. Larger plants may shift if disturbed, damaging their root systems.

Poprocks both sink and float! Poprocks can clog drains and tend to go everywhere. Knock a pot over and you?ll be picking up pebbles for a long time

Poprocks need to be thoroughly pre-washed to remove the heavy clay dust that is caused by the balls rubbing together during transport. Clay dust will still come off them and may require a flush of the system upon startup. Heavy clay residue will settle to the bottoms of systems and may clog pump filters.

Poprocks will slowly break down, as they are exposed to acidic nutrient conditions.

Poprocks can break, shatter and become crushed with handling

Rinsing tip for both lava and pop rocks:

(tdmaker) ?Simply, poke holes in the bottom of the bag and cut open the top. With a water hose, run water through the top of the bag. The red powder will flow from the bag through the holes in the bottom. Oh, and do this outside. Otherwise, do smaller amounts indoors?

Should I sterilize my used medium or encourage bacteria?

(10k) As far as harboring beneficial bacteria, user ‘Jackerspackle’ wrote some extensive material on this several years ago.

Basically what he said and I believe and practice, is that expanded clay mediums harbor them too. Just dont sterilize your rockage when washing them out and you’ll have plenty remaining in and on the medium to replenish the next grow as soon as they’re rewetted. Bactors like nitro simmonas and nitro bactors can go dormant in a dried out state, but will become “alive’ again as soon as they’re moistened. Of course, you’ll keep a more robust living culture going if you dont allow the used rock to ever dry out completely.

The only time when a grower would really want to sterilize the rocks is if he had suffered a root disease in the previous grow. A gnat infestation is NOT a good reason to sterilize the rocks since they can easily be treated using BTI bacteria and semi-sealing up the wetted bag (or tub) full of rocks for a week or so to prevent the life cycle from any possibility of continuing, but keep an air stone running in the closed up wet bag or box of rocks to help keep the bacteria colonies thriving.

7 comments to Should I use Lavarocks or Expanded Clay?

“Lava rock and poprocks are popular as they are inert, do not absorb water, provide good aeration, are Ph neutral, and can be re-used.”
If this is true (that they don’t absorb water), then this should not be necessary:
“if you use the lava rocks just make sure that you rinse well and soak them in ph balanced h2o for 3-5 days…”
Yes, both lava rocks and LECA have been used successfully by many, many growers, but you can’t seem to make up your mind whether they hold water or not, or whether one is better than the other, which was the premise of the so-called article. Maybe you should stick to growing rather than writing or giving advice.

“Hydroton and lava rocks are non-porous and have little water-holding capacity.”

““Lava rock is chunks of red, porous (VERY porous!) basaltic (volcanic) rock. ”

I think the quotes used are okay (besides being improperly cited), but otherwise this article is a poorly written piece of stoner hearsay crap. Hard to follow, contradictory, and reaches no useful conclusion.

You are totally right. Unfortunately Stoner seem to do that shit all the time, even on YouTube it’s a joke

Can I use the black lava rock? I got it from Lowe’s. The lady told me it would but you didn’t seem like she knew shit haha. Thanks!

Also while many are wary of sanitation, a cheap bottle of StarSan on Amazon can be used in a 5 gallon bucket to create a wonderful sanitation agent(used by homebrewers). Many people will use this product and a method of holding your stones under the water for more than 3 minutes to sanitize.

@Chuckie123 I dont know if you will see this, but home depot and lowes have Hydroton which is good, I use growstones just cause they are a bit cheaper. If you are really in to saving money though, find a commercial feed store in your area(I assure you there is one) and buy a 20lb bag of horticultural grade perlite. Make sure you get it in a big enough grade so that it doesnt fall through your net pots!

what can I use instead of lava rock, that is cheap and I can buy at home depot or somewhere cheap. what rocks can I buy and use ? thanks

Should I use Lavarocks or Expanded Clay? Gravel, sand, perlite, rockwool, oasis cubes, coco, expanded clay (?poprocks? or Hydroton/Groton/ L.E.C.A. and other names), and lava rocks are common