Aquatic Gardens Ponds, Streams, Waterfalls & Fountains: Volume 1. Design & Construction Volume 2. Maintenance, Stocking, Examples V. 1 Print and eBook on Amazon V. 2 Print and eBook on Amazon   by Robert (Bob) Fenner

Sick Koi Hi, Koi Problems Two of our Koi are tipping forward and can not seem to get their balance, they are both slightly bloated, one seems to go on its side also, we have a 450g  pond 2 UVs and very clear water, the ph is fine and so is the oxygen level, <What are these actual measures?> the  only thing we have recently changed is we introduced 4 small Japanese Koi about  3/4 inches, there are currently 4 10/12inch Koi, 2 6/8inch and the 4 new Jap  ones, please help. Many thanks <Mmm, may very likely be "something" from your new Koi. Did you quarantine these new fish? Have you contacted the folks you bought them from? Whatever the root, principal cause, I would at the very least execute an appreciable size (25% or so) water change, or better, move the fishes (all of them) to another holding system (like a kiddie wading pool, covered, aerated) as the cause may be some source of acute poisoning (like an errant "bug" spray). BTW, the term "Jap" is derogatory... Bob Fenner>  

Aquatic Gardens Ponds, Streams, Waterfalls & Fountains: Volume 1. Design & Construction Volume 2. Maintenance, Stocking, Examples V. 1 Print and eBook on Amazon V. 2 Print and eBook on Amazon   by Robert (Bob) Fenner