08-24-2012, 08:25 PM
(08-24-2012, 08:22 PM)Tiamat Wrote:(08-24-2012, 08:11 PM)tvguy Wrote:(08-24-2012, 07:40 PM)Tiamat Wrote: Adding gypsum seemed to solve my blossom end rot problem.
OK I'll drywall the whole thing
That'll work. It's supposed to be a soil conditioner also. Is there anything else in drywall? Something you wouldn't want in your soil?
Manufacture
A wallboard panel is made of a paper liner wrapped around an inner core made primarily from gypsum plaster. The raw gypsum, CaSO4·2 H2O, (mined or obtained from flue-gas desulfurization (FGD)) must be calcined before use to produce the hemihydrate of calcium sulfate (CaSO4·½ H2O). This is done in kettle or flash calciners, typically using natural gas today. The plaster is mixed with fiber (typically paper and/or fiberglass), plasticizer, foaming agent, finely ground gypsum crystal as an accelerator, EDTA, starch or other chelate as a retarder, various additives that may increase mildew and/or fire resistance (fiberglass or vermiculite), wax emulsion or silanes for lower water absorption and water. This is then formed by sandwiching a core of wet gypsum between two sheets of heavy paper or fiberglass mats. When the core sets and is dried in a large drying chamber, the sandwich becomes rigid and strong enough for use as a building material.
I think I'll just get some bags of gypsum or lime...... with a coconut