So lately I have been noticing my corals look a bit sad. I have all soft corals so the usual suspects (calcium, alkalinity) wouldn't be the issue. I started doing some testing a noticed I have 0 (or very very close to 0) nitrates. I knew that I didn't truly have 0 nitrates because I have GHA in my tank. However, this made me think: is the GHA taking up all the nutrients and making my corals look the way they do? Back when they looked a lot better I had a very small amount of it, now I have a bunch. Is this the issue?