[John Bloch]

Quote: Originally Posted by jnorth That pump would probably work. With your dimensions you will have about a 225 gallon tank. How many koi do you want to put in there? No matter how many you put in I would think that since you will have too many in a smaller then normal space for a long amount of time I would at least double the filtration (probably triple on 225 gallons). My 700 gallon QT has a filter on it that can handle up to 5000 gallons. As for filters you could use big rubbermaid containers or trashcans etc. 3-30 gallon containers is another 90 gallons of water which is a good thing.

Heres the deal...

I own 4 fish... and at the moment, 3 of them are about 3-4 inches long, and one is about 5-6 inches long...

my guess is that by spring, they all will have probably doubled in size... so I will have 3, 8 inch fish and one 12 inch fish... thats 36 combined inches to 15 square feet... which comes to a fraction that is 36 over 180 which leaves me a whole lot of space (if my rules are right)

I have heard that you want about 12 inches of fish to one square foot of water surface... (or something close to that...) wich means I will have plenty more than enough room for them...

but, they might grow more, and even if they do tripple in size, I will only have 54 inches of fish in a pond that will hold 180 inches...

I'm going to try and find something cylindrical to use as a filter... (like trash cans, but maybe a bit smaller) and just simple pvc patterns to connect them...

putting it all together should be rather simple... I just need the pieces...

also, there is a pump like that on the site that runs up to 782 GPH and is only 36 USD...

somone else on a different site said that the pump woul clog quick... but I'm going to have plenty of flitration, and it will be gravity fed, so the pump will be last in line...

I'm also thinking about a skimmer, but I think I can make one myself... I dont think It will be to hard...but maybe I'm wrong...