Calcium Carbonate

(3 customer reviews)


Calcium is critical to the health of your plant, Calcium Carbonate adds diversity to your calcium sources, balancing pH and supplementing calcium.

Not Avail in California


Product form:

Dry powder, water soluble

NPK analysis:


Other product highlights:

98 percent calcium carbonate. This product adds diversity to your calcium sources.

Primary function/use:

Balancing pH (more alkaline) and supplementing calcium.

Well suited for:

Any indoor or outdoor gardening environment.

Product designation:


When and where to use:

Ideal for all stages of plant development (grow and bloom).

Foliar spray:

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


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

For soil and soil-less:

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

For hydroponics:

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

Additional information

Weight N/A

3 reviews for Calcium Carbonate

  1. Nick

    I use this to buffer the pH in my aquaponics system. It keeps my ph at safe levels and supplements calcium, which is a common deficiency in aquaponics. I like it in the powder form rather than using sea shells. Much easier to dose and you know you’re not adding any sodium.

  2. Chad

    Great source of affordable calcium!
    Made some cool stuff with this and some organic acids.
    Also excellent mixed into your substrate to ensure calcium is always available.

  3. Muata

    I actually bought this product once I realized that it is basically the same as a MUCH more expensive product that’s marketed as a foliar nutrient spray. After doing a side by side comparison, I decided to be nice to my wallet and stopped buying the other, over-priced, brand. I mix this is my spray bottle and spray the underside of the leaves on pretty much ALL my plants. I just love to see the leaves perk up after being sprayed. The good thing is that you don’t need to saturate the plant to reap the benefits. Great product and a great price!

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