I'm hoping that leaving the 14w light on over the tank while I was at work is the cause. I'm going to start turning on the light when I get home at 5 and off when I go to bed at 10. Hope that does the trick.
Not dosing with anything yet, I have a few ember tetras that are getting added soon, and that will add waste and CO2, so I'll wait and see, I guess.
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