Oct 13, 2009, 6:56 AM
Post #7 of 7
You were right to warm the water to ambient temperature before adding to the pond.
Re: [tinkymoe] Was treating koi - pond drained - HELP
[In reply to]
I suspect you might have upset the balance of the system when you cleaned the basket filter. If the basket filter is the only filter you have cleaning the filter will upset the entire colony of bacteria that breakdowns the ammonia, nitrate and nitrite. Try not to disturb the environment of the pond as much as possible. Once the delicate ecological balance of the pond is disturbed (by killing one species en masse or eliminating a supporting element) the whole living environment can become a deadly environment that no longer supports most if not all other lives. The smaller the environment the more fragile it is.
If I am right, the right thing to do now is to restore the environment of the pond:-
1. Change water about 20% a day for a week and 10% for the following week. This help to clear the ammonia now that the bacteria cannot cope. At the same time allowing the bacteria to multiply.
2. Feed normally or less, never more. Never have uneaten food, remove them.
In future just do backwashing if your basket filter has this function. And if you must clean the only filter, clean partially. Never be too clean.
As said, am only speculating and the recommended water change do good than harm, anyway.