DkH

[whatcaneyedo]

I didnt experiance an alkalinity burn on an acropora until my alkalinity shot up to +20dkh due to having too much flow through a calcium reactor. The flesh just pealed off the acro almost instantly. I havent lost anything like that while keeping my alkalinity in the 11dkh range.

[sphelps]

Originally Posted by whatcaneyedo

I didnt experiance an alkalinity burn on an acropora until my alkalinity shot up to +20dkh due to having too much flow through a calcium reactor. The flesh just pealed off the acro almost instantly. I havent lost anything like that while keeping my alkalinity in the 11dkh range.

Every tank is different, but have you tried a lower dkh? I rarely hear of anyone having good results at that level. What kind of salt do you use?

[fencer]

Hmm..comments are interesting. The DkH of sea water is 7.5. Because I run Ultralith I have to keep it around that mark. I have tried raisng my DkH even 1 point I found I was tossing in a lot of Carbonate. I find it hard to even consider a Dkh of 9 as trying to raise it that high would probably throw my other prams out of wack. For those who have consistently high DkH I wonder if it isn't the salt that is doing it or not using RO/Dionized water for make up.

[marie]

I like to run with a DKH of 9 just because I don't test very often and when my corals (and coralline algae) go through a growth spurt, alk and cal levels drop fast.
At 9 DKH I have a little bit of leeway before it drops disastrously low