I have two koi (I think or just really large goldfish) and 8 or 9 goldfish, ranging from shubunkins to pond comets and there just may be one red cap oranda.
Anyways, my thoughts were to get an old feed or water trough, fill it up with water and a couple hang on back filters probably for a 60-80 gal size tank and stick it in my basement.
I don't know when I'm moving and am unsure how long they will be in my care vs. my parents care so there needs to be little maintenance required. This way I figured there's no worry about overcrowding because there's lot of room in a food or water trough (I think they're normally around 400 gallons)
I've never had a good look at the two big possibly koi fish that my parents got for free so I'm unsure how safe it will be roomwise for them. How am I doing?
Thanks, Una