Hi,
The gypsum (CaSO4 - 2H2O) on this website http://www.gypsum.co.nz/pages/product/ has a breakdown of major and minor components. Is this gypsum safe for aquarium use ?
Regards,
art_b
The gypsum (CaSO4 - 2H2O) on this website http://www.gypsum.co.nz/pages/product/ has a breakdown of major and minor components. Is this gypsum safe for aquarium use ?
Regards,
art_b