Salt

[reefy]

Hi everyone, I am planning to change my salt, what is the best salt out there?
I was using Seachem but I realized that my Ca is too high so I changed it into Instant Ocean well actually 50/50 but recently I checked my Ca now its damn low 350-370 and I have been adding turbo calcium everyday/spoon but wont go up at all, therefore I am thinking that my magnesium is very low(will get some buffer/test kit today)

thanks in advance!!!