If you haven’t tested your water quality yet, you should do it now and keep an eye on it through the entire season and beyond. If you need testers, we have them available, both at our physical store and on line.
There are many good articles about water quality and koi health on line and I’ve read quite a few of them.
I am sharing this link, from Hanover Koi Farms, located at 1332 MOULSTOWN RD. N. HANOVER, PA 17331. Their article, available online, is very inclusive and informative!