So velvet just killed all of my fish in my FOWLR tank and all I have left is 1 BTA and a cuc. If I lower the water level enough can I drill it with those still in the tank? I guess the other option would be to put all of the rock and water into bins with circulation, then drill? How long would I need to wait after the drilling and installation of the overflow until I can put everything back in? The tank is acrylic.
Thanks!!
Thanks!!