My water turned blue and is still that why. Why is it blue? And will it kill my fish?
Could I have a little bit more information. Such as, stocking levels, tank size, filter media, decor, or even where the water came from. I may be able to help if you provide me with such info.
Some medications I found for example methaline blue and melachite green (it should say what ones it has on the lable). Both of these will turn the water blue. Could be other meds mixing. Need more info on the tank what plants fish, meds, size ect
Like NeonAngelfish said. Need more info.