Pond Boss Forums INTRO New Forum Member Introduction Need help

New member here need some help hard heavy rain the other day and the temperature outside drop drastically. Today I have alot of dead baby bluegill and a few big bluegill dead what happen to my pond. I tested the ph it us 6.5.

Sorry to hear about your fish kill.

Big rains can cause fish kills by suddenly altering the chemistry of your pond water.

However, in your case, I think it was probably the cold rainwater that did the damage. Your pond was probably just now warm enough to get a nice thermal stratification established. The warm, oxygenated water was on top, and there was cold, low-oxygen water at the bottom of your pond.

The cold rainwater was denser than your warm water on top, and perhaps even colder (and denser) than your bottom water. This may have caused some partial to complete turnover of your pond water. Your fish were then subjected to a big temperature shock, plus were exposed to low-oxygen water if all of your bottom water came up.

One solution (beforehand) is to have some aeration at your pond. If you have a much deeper column of oxygenated water, then the big rain event is not quite so disruptive.

I do NOT know what you can do right now to benefit your remaining fish. Hopefully, one of the experts can give you some advice.

Good luck getting the rest of your fish through this stress period!