I've had my tank running for roughly a month and the alkalinity has always been subpar, and I've noticed it decrease over time. No corals, just clownfish, and I'm not sure if they consume alkalinity, but when I first started the tank my alk was roughly 140 ppm (7.8 dKH) and now over the past 3 days I've measured its been sitting around 120-126 ppm (6.7-7 dKH).
The weird part is my pH has been completely fine, and it's been sitting at 8-8.1 since the tank was set up. I use the Hanna alkalinity colorimeter to check for alk, and for pH, I've been using the Hanna HALO. I'm going to test pH and alk tonight, as well as test the saltwater I have from my LFS which is what I use in the tank.
I haven't done a water change yet and it's probably the main culprit, so I plan on doing one this weekend. However, if my alk levels are still low after the water change, should I consider dosing with ash soda or anything else that would bring my alk up?
The weird part is my pH has been completely fine, and it's been sitting at 8-8.1 since the tank was set up. I use the Hanna alkalinity colorimeter to check for alk, and for pH, I've been using the Hanna HALO. I'm going to test pH and alk tonight, as well as test the saltwater I have from my LFS which is what I use in the tank.
I haven't done a water change yet and it's probably the main culprit, so I plan on doing one this weekend. However, if my alk levels are still low after the water change, should I consider dosing with ash soda or anything else that would bring my alk up?