modified lung Posted July 22, 2022 Share Posted July 22, 2022 I wasn't paying much attention due to COVID and back issues and missed pH crashes (low 6) in a few tanks. Water quality is all back to normal but it looks like the CPDs caught a secondary infection from the stress. In one tank the symptoms didn't show up until after the water quality issues were fixed so I don't think they are directly caused by the low pH or any nitrogen issues it caused. Between the tanks only the CPDs have been affected. Rosy loaches, sparkling gouramis, ember tetra, pygmy corys, glolight danios, ricefish all unaffected. Another CPD tank that didn't have any pH issues has also not been affected. They are still looking lethargic but one tank looks like it's on the way to recover after 2 weeks with no deaths and no treatments. I just turned down the lights. Although the youngest fish seem to be affected the most and this is the tank with the oldest CPDs. The other tank with the younger CPDs after about 4 or 5 days has had its first death this morning. These guys are still surprisingly active even though they're otherwise not looking very good. Some symptoms: non-uniform off-white to slightly yellowish spots, weight loss, some tail fin rot, skin darkening on smallest fish only. Any ideas on what this might be? (It's not ich) 1 Link to comment Share on other sites More sharing options...
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