Hi folk, I'm a newbie here, and in fish keeping. At the beginning of the year I inherited my mother’s old 80 litre tank with a 7 year old red spotted Pleco who is a foot long. Since then the tank population has expanded to a point where it’s getting a bit over populated. So today I paid for and ordered a new 220 litre tank to be made.
Currently I am running 2 internal mechanical filters and the ph and ammonia and nitrate levels are spot on. The tank has only tropical fish in it and the temp is 26 deg.
For the new tank I purchased a new Aqua One external filter with a 700 litre per hour flow rate. I have set this running on my old tank so it is prepared for the new tank while still running both internals.
My 1st question is, can I over filter the tank?
My 2nd question is, in the tank I have 3 Firemouths, all well and eating and swimming, but the largest 1 seems to only come out in the dark, the others don’t care when they come out. He has dug a trench down to the bottom of the tank under a rock, is this normal?
Thank for all the interesting helpful post I’ve read so far.