A separate quarantine tank is a must-tool for koi hobbyists.
It is possible that newly purchased koi still carry parasites, bacteria, fungus etc., even though we did our best to eliminate them. Also, if they are shipped to you in a box, they are usually extremely stressed and exhausted. It is important to provide them a nice surrounding so that they can recover from their journey quickly. Even if you bought from a trusted wholesale koi supplier you’ve bought from for years, you should still quarantine.
Keeping and treating new koi fish in the separate quarantine tank for 21 days is the best way to decrease the risk of disease before introducing them to your main pond. In addition this will give your new koi a chance to rest.
We strongly request the quarantine of new koi to every customer who purchase koi from us.