John Can you beat this for an indoor tank, this is what we used to raise koi in then sell off when they reached the 22" mark ?
We ran it for 22 years up until my disablities forced us to move outside to a pond or give up the hobby ............
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Do you know I'm now really glad we did make the moe outdoors because it gave us both a shot in the arm and re-kindled our flagging hobby
It held 1ton of water the external filters where capable of 950 gallons imperial per/hr, we also employed a chiller unit during the summer months and it also had a 15 watt U/V sterilizer unit.
Each water change was roughly 70 gallons imperial
We paid £793 uk for it, with the gravel thrown in for free along with our first koi book orth £28.00 uk , twenty two years later we sold it for £600 uk which you must admit for a tank that age it held its value quite well indeed .
It's now is employed by the chap who bought it from us as a Marine Tank with reef etc .
rgrds
Dave