Viagrow Viastone Expanded Clay Rock Hydroponic Gardening Grow Rock (50-Liter)

Brand: Viagrow

6 ratings

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pH neutral, porous, lightweight, reusable, clean and eco-friendly
Helps increase yield quality & quantity
Grow rocks measure between 8 and 16 mm in size
Pellets drain freely without holding excess water, an optimum air-to-water ratio
Provides high oxygen levels around the roots (especially useful in a flood & drain hydroponic systems)

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Product description

ViaStone expanded clay aggregate media is an incredibly resourceful growing material derived from kiln firing clay to over 2,000 degrees and forming it into the round inert and highly porous grow media that is so popular. Clay itself is renewable and plentiful, making ViaStone ecologically friendly. Use ViaStone virtually anywhere: the greenhouse, in propagation systems, for outdoor gardening, around shrubs & trees, as compost aeration, or as a hydroponic growing medium. Expanded clay grow rocks are the most widely used hydroponic media in North America. Please Note – When estimating necessary amount of Viastone for your particular application understand that the 50 liter and 10 liter quantity is based on the standard Horticultural trade gallon = 0.71 U.S. liquid gallons.

Product information

Product Dimensions

20 x 8 x 24 inches

Item Weight

33.1 pounds

Manufacturer

Viagrow

ASIN

B001IA8YI6

Item model number

VS50

Customer Reviews

6 ratings

3.4 out of 5 stars

Best Sellers Rank

#639,702 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#8,914 in Garden Fertilizers

Is Discontinued By Manufacturer

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5 star		36%
4 star		33%
3 star 0% (0%)		0%
2 star 0% (0%)		0%
1 star		31%

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Deb Reese

great bag of balls

Reviewed in the United States on May 8, 2012

Verified Purchase

Expanded Clay Rocks are all I use in my hydro system. I will never use rockwool again. The only complaint I have is .... I paid $34.99 for the rocks and $41.00 for shipping. Pretty pricey from these guys.

9 people found this helpful

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Chris Polfus

Great price. Shipped quickly

Reviewed in the United States on January 21, 2016

Verified Purchase

Great price. Shipped quickly. I like it!!!

One person found this helpful

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brian maurer

not good..

Reviewed in the United States on April 11, 2015

Verified Purchase

Not what I expected..half of them float..half sink..they dont really hold water like they need to. Granted its a big bag...I had to put soil on top of my net cups to keep the plants alive..will not be buying again

6 people found this helpful

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Sacha Michaud

Product is good. I just didn't like the fact that I ...

Reviewed in the United States on November 18, 2015

Verified Purchase

Product is good. I just didn't like the fact that I had to pay shipping for each individual bag...and had to pay even more on top of that because the product went across the US/Canadian border.

3 people found this helpful

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Frank M. Wirth

Very happy with the product

Reviewed in the United States on December 18, 2014

Verified Purchase

Fast shipping. Very happy with the product.

One person found this helpful

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Mike

Must be washed and screened before dumping into grow beds.

Reviewed in the United States on August 4, 2016

Works well in my aquaponics system, but I really messed up by not washing and screening the first 10, 50 liter bags that went into my grow bed straight from the bag. The first time the water cycled through the grow bed, the fines flooded into the tank making the previously clear water completely opaque, less than 1/4 in visibility. The fish survived but were not happy for a few days. The small sand like particles completely messed up my bell siphon. I was forced to build a screener and wash box, remove all of the 500 liters of product, feed scoop at a time, into a second grow bed after washing and screening throughly. There was almost 3/4 of an inch of muck, fines, and sand left in the bottom of the grow bed after all of the stones were removed. Rinsing was not enough. Wash and screen moving the material several times over the screen did the trick for me. Yes I will buy more but now know to wash and screen before putting in the grow beds. I may add a photo of the raw fine particles in the bag.

Yes, the individual granules of material floats in the grow bed. That may be why a typical grow bed design has a maximum water level at
about 10 inches and media depth at 12 inches. The two "dry" inches of material hold all of the material in place.

One reviewer commented that the material was not PH neutral. I found that my PH rose a bit during the cycling process but has stabilized
now that the nitrifying bacteria are active.

And yes, I have now purchased 60 50 liter bags through another source for my current aquaponics system.

10 people found this helpful

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Viagrow Viastone Expanded Clay Rock Hydroponic Gardening Grow Rock (50-Liter)

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