tank is an all in one 5 gal. I replace filter pad With bulk filter pad I run in large tanks at my house, also run a small amount of carbo. Has plastic biofilter in aio chamber as well.
I change water with water I mix at home and keep in heated circulating 55gal drum. Water is 6 stage RODI that I make sure is 0tds with calibrated TDS meter and mixed with tropic Marin pro reef, from Germany. Same water used in my display reef and frag tank.
I’ll test parameters next time I’m here.
honestly think fish is looking a little better than last night before WC. He’s seeming to be a little more ‘spunky’