Jun 19, 2002, 9:53 AM
Post #1 of 35
Hello all, have been reading here for a while, but have not posted before. I am in the UK.
Nirite and Flashing problem
I am having a new pond built in the garden and it'll be very nice and about 5000 gallons.
However, that's not built yet, and the old pond had to go. So I got a 250g f/g holding tank with filter (brushes, flocor and matting, fed by Airmax 3500 and an air pump blowing 2 x 50mm air stones in the filter and one 12" aqaurium air block in the tank) set up in the garage. It's holding the one koi from my old pond we're keeping (the other fish were normal carp, goldfish, etc, and a neighbour wanted them) and we bought 6 small goldfish to get the filters matured.
We set up the tank a month ago. We used some Boi-start and a bit of ABA. We were adding more ABA about once a week.
We added 6 small goldfish after two weeks and all measurements were more or less perfect (PH 8, Am 0, Nit 0). We also added some more ABA at that time.
After a few days Amonia had risen slightly. Then that tailed off, and now for about a week we've noticed something other than 0 nitrite. It went up slightly. We now had to add the 9" Koi from our old pond. We had no choice, as the old one was being ripped apart.
But 2 days ago it was at 0.4mg on a Tetra kit. I have been carrying out 20% water changes nightly and using Interpet Water safe or water clear? The thing that protects against chlorine anyway. I've also added about 200g total of table salt (only salt with small anti-caking agent - checked that) as the books say this helps the fish cope with nitrite, and been adding more ABA.
Just before he went in we added a general Interpet anti-parasite treatment.
Last night I thought the colour on the test had reduced slightly, now just about 0.3mg.
The Koi has been scratching himself against the edge of the tank and the airstone, not constantly maybe, but quite a bit.
So, is it safe to keep him in there, or should we find somewhere else? Or will that just delay the process his extra waste is causing anyway?
Should this finally tail off over the next few days? The thing is we have another koi waiting to come home from Madidenhead at Hickstead and we don't want to bring that home while it's like this, but will adding him just make this all happen again?
Any advice gratefully received.
Kind regards, Col.