I could use some help, please. My betta seems to be depressed? Is that even a thing? I was on vacation and had an inexperienced pet sitter that had specific feeding instructions. Unfortunately they didn't realize leaving the light on 24/7 was not a good thing. I came home and the water was the color of lime green kool-aid. I did a 25% water change using prime and pristine. 2 days later clear water 6.8 ph, 0 ammonia and nitrites 10 nitrates. No fish died but my betta now spends his time hanging in this corner looking like he's in time out. He's a rosetail in a 36 gallon bowfront. Tankmates are 5 corys, 12 rasboras and 2 small nerite snails. He has a hammock, floating log and various height broadleaf plants to rest on. He hasn't used any of these (that I have seen yet) since I came home. Any thoughts or suggestions?