Simply Koi and More Koi

I have just found another element to the combination of Prazi,Malachite & Formalin. Prior to using this treatment Iwas beginning to get the first signs of blanketweed. After the second treatment the blanketweed turned black and was completely stipped to the walls. I am not suggesting for one minute we use this to control blanketweed, however it looks like another plus. Best Regards Dave

How long do you wait to change water after treating with pure prazi

what are you treating dave body or gill? if body a 5-7 days, gill I would leave it a bit longer
dunc