I may have spilled some PH'd down water on it, 4 days ago. Curious as to why it would take that long to show.. Lights haven't really changed over the past week and as far as acid toxicity goes should I just flush it out with straight water? I've been using tap water which is quite basic, best guess using my chart is 7.5+. I can really only eyeball it down to yellow. Also use separate gallon jugs so maybe the batch of water for this one was to acidic then