The 300 gall QT has been up and running about 4 months or so now and its already paid for itself. Last night i transfered back to my main pond completely healed the last of 3 kohaku's that got injured durin the long hard winter. I feel sure that without being able to treat these fish at 24C i would have lost all of them, so at a cost of approx £250 its been a worthwhile investment.
Furthermore,
It's now home to my N.W.K.S. G&S Chag and 4 small babies bought from Richdon that i'll be growing on to put in the main pond next spring, i've took some photo's so will keep you updated of there progress.
So i know a lot of the koi books recomend a QT and i would say its money absolutely well spent. For the cost consious amongst us, mine came second hand of flea-bay and i moded the filtration and pipework to suit my own requirements, ie static and fluidised K1 and valving so all pipe runs are in isolation.It sports a bottom drain, UV and loads of air, which i believe essential for koi development.
All the best .................Mitch.