Soluble Gypsum Powder


Product Documents

Not Available in California

Product Description

Product form:

Dry powder, water soluble

NPK analysis:


Other product highlights:

Product is made up of 22% calcium and 18% sulfur. Product is derived from gypsum which is 97% calcium sulfate.

Primary function/use:

To add calcium and sulfur to the soil.

Well suited for:

Hydroponics, soil and soil-less.

Directions For Use

How to mix:

Mix 2 to 4 oz. with one (1) gallon of water to cover 100 to 500 sq. ft.


Ensure bag is properly sealed and stored in cool, dry, dark place.

When and where to use:

Start with early season soil preparations and supplement as needed during the grow and bloom cycles.

For foliar application:

Mix one (1) oz. with one (1) gallon of water

All items are shipped using USPS Priority Mail, unless otherwise requested and arranged by the customer, prior to order completion.Free Shipping

All orders ship within 48 hours of order confirmation and as always FREE SHIPPING in the USA. After successfully placing an order from you will receive an order confirmation email with the details of your order to the email address provided.

Once your order has shipped you will be emailed specific tracking information.

To check the status of an order please visit our “View Order” page.

Gift Cards are electronically delivered to your email address.

State of Idaho is not an option for shipping any of our products. If you are in the State of Idaho, please contact us direct.

Kelp4less Disclaimer

While Kelp4less has made every effort to ensure accuracy of information on its website and labels, Kelp4less assumes no responsibility or liability for the use and results of any of it’s products.

The purchaser and the end user of Kelp4less products assumes sole responsibility and liability for product use, results and disposal. Kelp4less makes no guarantees either express or implied.


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