My tank has been up almost four months now, and things are overall looking great. I have great coral growth, my fish seem happy and healthy etc. However, lately (for at least the past month) my alk and pH have been low. pH has been swinging from about 7.6-8.0 daily, hitting its maximum right when the lights go off at night. My alk has been at around 7 dKh. I also tested calcium and it has also dropped, but since it was high to start with I'm not too worried about it (started at about 520 ppm and has dropped to 400). Alk and Ca tests were done with the API test kits, pH is measured with a ReefKeeper Lite probe that was calibrated in pH 7 and 10 solutions. I've been trying to bring up the values with water changes, but I'm guessing my regular 5% weekly isn't enough since it keeps dropping. I got some of the Thrive Aquatics dosing when they were giving it away, so I'm going to start dosing that to see if I can't get my values up.
My question is: is there anything else that I can be doing to keep my values higher? I have a mixed reef and have seen growth on SPS, LPS and softies recently even though my chemistry isn't where it's supposed to be. Thanks for your help!
My question is: is there anything else that I can be doing to keep my values higher? I have a mixed reef and have seen growth on SPS, LPS and softies recently even though my chemistry isn't where it's supposed to be. Thanks for your help!
