low ph

[wickedfrags]

For a tank this size you could raise your alk with a commercial buffer/reef building product to the desired level. After this time, you will need to supplement your tank on a daily basis with a 2-part additive to maintain those levels (depending on the coral load of you tank you will need to supplement different amounts).

The other less time consuming method is to invest in a calcium reactor to maintain your levels alk and ca.

Originally Posted by grimmer

the tank is 120 gallon 100 or more pounds of live rock

how do you keep alk at the disired levels with good salt ?