Can I use gypsum in making GH booster?

Neil Frank

Lifetime Charter Member
Lifetime Member
Feb 19, 2008
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or you can use "Plaster of Paris"

Pulverized gypsum (CaSO4·2H2O) sometimes comes as relatively coarse granules . You can also use plaster of paris (CaSO4·0.5H2O) which has the same solubility, but its finer powder-like particles may dissolve more quickly.... or it just might be more readily available or cheaper to purchase. It also has a little more % calcium per tsp.