I think it's dolomite lime (garden lime) and it is better than hydrated...it's got both Ca and Mg. and won't rip the Ph a new asshole...it's not quick acting like hydrated...
I seen in the main thread that Ph can be lowered with lemon juice. I have ph levels between 6.8 and 7.0 and would like to lower a bit. Growing in FFOF soil, any sugestons on ratio of amount of lemon juice to 1 gallon of water?