in aquaculture or aquaponics i dont recommend tap water because of the chlorine/chloramines but bluegill do have a bit of a tolerance to it.
A few years ago, i was topping off the tank from the tap and i forgot about it and the hose ran all night.. overflowing diluting and replacing my amber colored aquaponics water with crystal clear tap.
I did treat the chloramines with aesorbic acid (vitamin c) the next morning, but i lost zero tilapia, zero bluegill, but about 80% of my channel cats were dead or died within 24 hours.
Very interesting Brian! It should also be noted that chlorine breaks down rapidly when it makes contact with organic material. Sunlight and aeration also break it down.
