I just moved 2 koi into my QT, coming from a pond that was around 15 degrees cooler. I put them in a bag with the cooler water in and left it to float for 45 mins on top of the tank’s water, then emptied the bag into a blue bowl with some water from the tank added and mixed the cooler water from the bag into it with the fish. Left them for 20 mins then put them into the tank. Temp difference was 5 degrees by the time I did this. I’ll also add it’s less of a shock going from cooler to warmer than the other way around.
Last edited by Essex Koi; 09-27-2018 at 05:12 PM.
Main pond 4000 US Gallon, 22 Koi. Oase Proficlear Premium + Bio Module, Bitron 120 w UVC, Bakki Shower, Dura 7+ ashp. Grow on tank 600 Gallons with Eazypod Automatic and 70 litre K1 biochamber.