Cal mag

[Roygmz]

Cal magCan I use Cal mag with on the outside grill what are substitutions for Cal mag is a steer manure and back guano the same time but Nutri

 

[Jack og]

Hmm, organic is always better, but magnesium is widely available as epsom salt and calcium nitrate is cheap for calcium or maybe your well water or city supply has adequate quantity in it.
Read aqua man Ph thread to learn what and how. Some very good info there