Hi all so I've been having a issue with my 210 and I'm not sure whats going on. Other than a low ph 7.6-7.7 and slightly high nitrates 59 ppm the other night I'm not sure. But I did a water change and got the ph up. Lost several fish, the first to go was a group of yellowtail damsels strangely enough. Added new fish a couple weeks ago but they were Quarantined when I got them. Some were towards the top and breathing a little hard. It was suggested by the company I got the fish from it could be co2 so I plugged in my two internal UVs and turned the skimmer part on and I keep opening up the lids on the tank sporadically. I noticed my tang looks strange on his sides. Not sure if it's stress or maybe there is some kind of disease in there. I did redose with coppersafe but its only like 2-2.10. Anyone have any thoughts what i can try? Thanks!


