Quote:
Originally Posted by
mitten 
John-
You're wrong. About a couple things. Forget inch to surface guidelines.
You can keep a lot of fish in 225 gallons, but not if you don't do it with intense filtration. Without intense filtration you have about all the fish 200g can handle. This project is where you are going to learn something and this winter is when.
Learn the construction methods you'll need. Are you using carpentry or masonry for this tank? Figure out how to install a liner, or plaster and waterproof some blocks. Plumbing is a schism for the uninitiated. Try not to buy a lot of stuff that you will kick yourself in the ass about later.
Solid safe, stable container for the pond.
Efficient way to flow waste away from the fish, collect it in one spot, remove it daily.
Some bio filtration.
Adequate heat and light.
Water flow and oxygen.
Bottom drain? Yes.
Settlement chamber? Yes.
Barrels for filtration? Probably yes.
700g or 900g or 1200g pump? Yes.
Barriers to keep them from jumping out and ending up on the floor. You decide.
Twice as big next year? Probably not.
Alive next year? You decide.
Feed less, filter more.
Mickey the windowman