I have come into ownership of a new property which also has a small pond with a couple of large koi (about the length of my forearm) and 5 smaller fish. One of the fish is poorly - I need some help on what I should do to treat it, do I need to setup a small isolation tank and if so what kind of filtration/aeration might i need to keep it going, while i treat the little one?
You can set up a tank with an internal filter sized for the volume of the tank, but will need to fill it with media taken from your pond filter so that it is cycled. Adding an air stone is a good idea when using medication.
I've found some second hand tanks on ebay for around 100G/454L, i'm struggling a bit with the pumps and filters though, they all seem to be 000'sG. I'd appreciate any advice on what I could do for a pump/filter solution. ty!