Algae needs a respiration period, something like 18 hours on and 6 off is ideal. Time the off period with when your DT lights are on, to counter the pH swings as mentioned.

Quote Originally Posted by ramsey View Post
I don't know of any science behind it, so take it with a grain of salt. However, I've seen numerous posts on RC about RTN and bleaching with high alk and carbon dosing. If you search around in the SPS forum, you'll see what I mean. Natural sea water is 7dkh so that's what I shoot for (this is also what zeovit recommends). Again, I'm not sure about any science behind it.
Hmm, okay. Wasn't sure if it discouraged the bacteria at higher alks or something.