Hello all,
I bought some Corys off a chap from here last week. When I got them home I tested their water as they are typically kept around pH6 or below and my water comes out @ 8. Sure enough the water was around pH6 and very soft. I had some water that was soft and stable at around 7.8 with a mature filter, low light and lots of cover. I introduced the new water over a few of hours (I'd say 3ish) and eventually in they went. They seemed to be a bit stressed but it all looked normal. They sat together in a group under a log and moved around every so often.
After 24 hours or so they started to zip up and down the glass like proper stressed fish do. I was concerned the pH swing might have been a bit steep so I got myself some Seachem pH7 regulator and dosed my display tank. Once it was stable, I slowly introduced the buffered water to their quarantine tank over about 4 or 5 hours and then plonked them in. I figured if they are going to be stressed they may as well do it in the big tank surrounded by lots of lovely plant life!
A week and two days later and these fish are still losing it. Day and night, they are still up and down the glass like crazy. Temp, pH, hardness, and Ca are all very stable (loving the Seachem product btw!). Does anyone have any idea why they might be so freaked out? Was the initial pH shift just too much? I have been feeding sinking algae wafers and some of it seems to be getting consumed but not a lot.
Any ideas would be super, I feel so bad for them!