- Pure organic clay pebbles
- Retains up to 35% of its weight in water
- All-nature, eco-friendly, non-degradable soil enchancer
- See More Details
Frequently Bought Together
Price:
$6900
Product Overview
Hydrorock 42 Qt. soil enhancer is made from pure organic clay pebbles that help intensify hydroponic growth. Hydrorock will help promote healthy plant growth without the use of soil. The advantage of the organic clay pebble is the light weight structure, durability, and permeability. With this feature it will reduce water usage and keeps hydrated for longer.
- Use in hydroponic system and can be blend with soil to become a soil enhancer
- Helps retain up to 35% of its weight in water and have a neutral pH
- Hydrorock clay pebbles are long-lasting and can be reused after washing
- Clay pebble design ensures excellent aeration
- Hydrorocks, the lightest of the lightweight aggregates in the U.S., is an all-natural, eco-friendly, non-degradable soil enhancer
- Click here to view the Types of Soil Buying Guide
Product Overview
- Pure organic clay pebbles
- Retains up to 35% of its weight in water
- All-nature, eco-friendly, non-degradable soil enchancer
Compare Similar Soil Amendments
 | |  |  | |
| Brand | Vermont Organics Reclamation Soil | Hydrorock | Viagrow | |
| Name | 5 lb. Biochar 100 | 42 Qt. Soil Enhancer | 4 cu. ft./29.9 Gal./113 l Horticultural Vermiculite (2-Pack) | Roots Organics Hydroponic Soilless Gardening Coco Fiber Media Mix (2-Pack) |
| Price | $3498 | $6900 | $6967 | $6998 |
| Ratings | (4) | (9) | (38) | (0) |
| Soil Amendment Type | Soil Conditioner | Soil Conditioner | Soil Conditioner | Soil Conditioner |
| Organic | Yes | No | Yes | Yes |
| Bag Weight (lb.) | 5 | 26 | ||
| Bag Capacity/Dry Volume (cu. ft.) | 1.404 cu ft | 4 cu ft | ||
| View Product | View Product | View Product | View Product |
Compare Similar Soil Amendments
| | | | |
| Brand | Vermont Organics Reclamation Soil | Hydrorock | Viagrow | |
| Name | 5 lb. Biochar 100 | 42 Qt. Soil Enhancer | 4 cu. ft./29.9 Gal./113 l Horticultural Vermiculite (2-Pack) | Roots Organics Hydroponic Soilless Gardening Coco Fiber Media Mix (2-Pack) |
| Price | $3498 | $6900 | $6967 | $6998 |
| Ratings | (4) | (9) | (38) | (0) |
| Soil Amendment Type | ||||
| Organic | ||||
| Bag Weight (lb.) | ||||
| Bag Capacity/Dry Volume (cu. ft.) | ||||
| View Product | View Product | View Product | View Product |
Specifications
Details
Bag Capacity/Dry Volume (cu. ft.)
1.404 cu ft
Organic
No
Returnable
180-Day
Soil Amendment Type
Soil Conditioner
Soil Matter
Non-organic
Questions & Answers
6Questions4Answers
Can this be used as medium potting for Lotus plant?
Asked by J48 May 17, 20181
AnswerYou would need to review this with a landscape professional. Thanks
Can this be used as an orchid medium? I believe the German made Seramis is a similar product but...
Asked by Kimmy August 10, 20171
AnswerHydrocks can be used as a soil medium for potted plants. Please visit http://www.hydrocks.com for technical specs to see if Hydrocks would be the right choice for your Orchids.
Where is Hydrorock manufactured?
Asked by Emjay August 21, 20161
AnswerThis is manufactured in the US. Our distribution center is in South Charleston, OH
I would like to build a pitchers mound in my yard...do you think this will work?
Asked by Jerry07920 February 18, 20171
AnswerNo, it will not work. Pitcher mounds are best constructed of a primarily clay product (but not processed) similar to a river bed clay. You need to use Infield mix with high clay percentage and low sand and silt percentage.
The image of the clay pebble on the front of the bag (irregular shaped, gray in color) is not the...
Asked by LJ September 11, 20200
AnswersCan I use this as a replacement for Lechuza Pon?
Asked by Wiggins May 24, 20200
AnswersCustomer Reviews
Overall Ratings
Water evaporating rocks
March 13, 2014
Despite the heavy weight of the bag, these rocks are lightweight. They can be added to the bottom of the pot below the soil to help retain the water so the roots stay moist. You can also add them on top as a type of mulch so it keeps the moisture in. They can also be used in planting beds as well. They are not biodegradable so they will last.
It is what you'd expect.
February 11, 2014
Used this Hyrdorock on a jar garden project and in an aquaponics project. For my projects 42qts was more than plenty which is just shy of 1.5 cubic feet (a cubic foot being a 1' x 1' x 1' pile). The rocks are varying sizes and have a lot of surface area.
I put some in the bottom of some jars (with pebbles on top to help fill-in then soil) to help prevent root rot by allowing any excess water to settle to the bottom and then evaporate out later. [Note that you'd want to cover the bottom of the jars as the roots grow because roots don't like sunlight.]
For my aquaponics grow bed the Hydrorock also worked well with more established plants.
Testing this product for a while
December 9, 2013
I decided to try this hydrorock cooked clay system in a floater and growing tank but before go build the larger system a hybrid aquaponcis system of my own making and invention make sure this Hydrorock was the right medium Tested a Kale plant seen in the photo was transplanted when it was 2 inches tall it nearly doubled in size in the 5 weeks promising results
VERY DIRTY
June 28, 2020
VERY DIRTY IF GOING TO USE AS A GROWING MEDIUM FOR HYDROPHONIC SYSTEM , WILL NOT BUY AGAIN!!!!!!!!!!
Response from National BulkJune 30, 2020
We are so very sorry to hear of your experience. Please contact us at 888-443-2855 as we would like to discuss this further with you.
This wasn’t the item I expected it to be and...
June 23, 2020
This wasn’t the item I expected it to be and it doesn’t serve its purpose for me.
Response from National BulkJune 23, 2020
We are so very sorry to hear of your experience. Please contact us at 888-443-2855 as we would like to discuss this further with you.
Happy with product...
June 3, 2020
Happy with product
Animal, Mineral, or Vegetable?
February 7, 2014
Ok, so I have to admit that this was not what I had expected from the description when I ordered it. So to help others, let me give you my candid take on this product. It's a bag of rocks, small, non-uniform rocks, like a cross between lava rock and coral from a reef. Most are about an inch or so in diameter, but not uniform like gravel, or as hard. I can snap a piece in half with my hands, but it should not break on its own. It is porous and holds water, but dries out quickly if not kept damp in dry climate. If you are looking for a filler material that can be cleaned and reused for a hydroponic soil mix, this may work out. I think the root structure will determine if this soil filler is a good substrate so you need to try it in your own environment and see if it is a good fit for your application. I have used clay based fillers before with mixed results, this may work out better, but only time will tell. As for re-use, I'm not sure how to actually clean rocks, maybe just a boiling water rinse will do. If they were uniform, I might brush them off, but these are too irregular.
Great and Functional Product
November 5, 2013
My dad installed a row of Hydrocks at the open edge of our front landscaping that wasn't lined with hardscaping. We experience storm water run-off in some parts which can displace the mulch of the landscaping. After experiencing at least four rainstorms since installation, one of which was steady and lasted for part of an afternoon through the night, most of the Hydrocks stayed in place with only a few spilling out into the driveway.
Keeps seedlings growing in AZ
October 16, 2013
The Hydrorock is fantastic when added to potting soil. I have no decent ground for growing here so I depend on raised mini-beds and pots. Lake Havasu, AZ is hot, very hot and dry. When we get humidity above 15% we suffer. Consequently our veggie plants suffer from low humidity. I have found it very difficult to keep plants growing, especially seedlings and , yes Sept. is the time to plant here. Veggies cook on the vine in summer if they survive and we do not freeze, well, hardly ever. I mixed about 25% Hydrorock with old potting soil and it helps keep it moist and soft. I also grow intense, that is close. I have 9 squash plants in a 20" pot and they are doing fantastic. They look healthy, full & green. My green beans all came up but sadly a rabbit got in and ate them down to nothing. They have been replanted and are growing again. Fence, gotta use a fence. The Hydrorock keeps the soil moist even on windy days and that is a must here. Will submit another review in a few months with final results but for now I am thrilled.
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