Can I use gypsum in making GH booster?

Neil Frank

Lifetime Charter Member
Lifetime Member
Feb 19, 2008
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.