Let see, that would be 4984 Imp. gallons or 22.4 ton system. Mr. Meada says it's best to match koi to your pond. For those with small ponds he recommends keeping males. You really need a pond of 100 tons to keep jumbo females. Also due to the depth to surface ratio, sufficient aeration will be important. What if you designed it to be rounder rather than four cornered to cut back on dead swim space? Good luck |