Water changes


New member
Manhattan Reefs
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London, UK
I usually do water changes with esv salt and just make it the day before and change it the next. i never really adjust it to match the tank settings but i would like to start so obviously i know how how to match the temperature, but what about the pH, calcium, and magnesium. i know pH has to be the same but i don't know how to do it naturally. and what about calcium and mag do they have to match exactly too?


Senior Member
Manhattan Reefs
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your calc and alk balance determin your PH if your mag is where it should be. If your dosing ESV 2 part adjusting calc and alk is easy. Mag you adjust with the crystal stuff in the esv mix.

With the ESV system you should be mixing constant parameter water if your leveling your spoons and measuring right. Check the PH and temp and you could add it pretty much instantly after you mix.