Quote Originally Posted by MizTanks View Post
I looked up the ESV and it's not that expensive. So since my cal is 440 and my kh is 9 would you recommend me using the 2 part in order to keep these reading consistent? I've always depended upon my salt to do this. However now that my corals are increasing (couple of sps) I don't want to worry about these levels dropping off.
I would recommend that you use it with caution initially, and only if you are seeing a drop in your levels. Never dose anything without testing. If you are doing frequent enough water changes, you really shouldn't need it. With a big enough SPS load however, even two part may not be enough to keep up with the demand and you may need to supplement (don't think you are in this boat yet Jamie, just saying in general).