suspected septicemia - pygmy cory. Help needed!

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suspected septicemia - pygmy cory. Help needed!

Postby S.Bug » Fri Aug 11, 2017 10:14 pm

We have a 180l tank with 8 pygmy Cory, 8 dwarf neon rainbows, 7 Danio and 8 WCMM and an assortment of shrimp. It is fairly well planted.

This morning we found one of the Cory's has red around the base of his pectoral fins which we suspect to be haemorrhagic sceptecemia. All the others seem fine, and he's acting normally.

We tested the water and it came back as 6.4 ph (lowish for us, but we have very, very soft water with practically no buffering - we add cuttlefish occasionally for the shrimp, but not recently), 0.5 ammonia, 0 nitrite and 80or just over on nitrate. We've never had an issue with chemistry before other than softness and we do weekly water changes of 20l or 30l (alternating), last change last Sunday. We did a 40l water change this morning as we did not want to do too much in one go as the shock can be a problem for shrimp etc. We put in new mechanical filter (did not touch the bacterial media as it seems to be working, we also left the lights on to encourage the plants to do their work).We plan on another 40l water change tomorrow morning. We just did another water reading and it is now 0 ammonia, 0 nitrite and 60 or just above on nitrate. Ph is 6.8 (same as the tap water we also retested).

Our question is what to do with the Cory. If we get the water chemistry back to good levels again, will he improve on his own in time or should we be doing something else for him?

We are presuming that the slightly ammonia or nitrate was the cause in the first place!

Ps. We stopped feeding the fish while we sort this out.

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