There's a lot of moving pieces and info so apologies if I'm not following the bouncing balls well enough. If it is nitrites at 40 and not nitrates, then that could be a problem as nitrites are more toxic to fish. Having a high fish load will do that especially as the fish get bigger and product more waste.....Maybe I have this backwards my nitrites are at almost 40 and ammonia and nitrates are 0...
The way to keep koi is in small numbers allowing for them to grow , you nust check the water perameters on a weekly basis and you do water changes at regular intervals not when the ammonia is going up .Sorry just did not want you guys to think I was being defensive, I am worried that I am going to lose all my fish. Maybe I have this backwards my nitrites are at almost 40 and ammonia and nitrates are 0. After I filled the new pond I let it run for a few days but it did have my old filter system hooked up to it. The waterfall was already there and I put the matala filter media in water to keep the good bacteria while we was building the new pond. And the matala biosteps filter was hooked to the tank holding the fish. I also used a starter kit for bacteria from a pond guy to ensure that I had the bacteria going. I do not change 50% of the water every week only when the ammonia level starts to increase, which has only been one time since I started the new pond. Most of the time it many be less than 25% depends on how they look and the pond looks.
Not beating her up mate just trying to helpDave, relax before you have a stroke! Lol. I have to say, no-one gave this guy advice how to proceed, so we can't beat him up over what I'm sure were good intentions.
No one I know has stocking levels that high Brenda but by drianing your pond you have complicated matters somewhat in that you will need to cycle the pond again we are only trying to help you here your pond guy should have taken a scrape and told you the results of the scrape did he do one or was it just a visual oh yeah your koi have this treat them with this ?First thing I did was take a dead fish and some water to my pond guy. He told me to drain the pond 90% and put the fish in a smaller pond to treat them with proform-c so that is what I did. And to take all filters and place in water except for the matala to hook that to the smaller pond. After three days to fill my pond up let it run and treat it for a few days then put the fish back in. I am on here because my fish are still dying and I need help. The fish that are dying are the sick ones. They are all swimming around like they are fine, next morning there is a dead one I have only lost 6 fish since I started the treatment that my pond guy gave me. I have read a lot about Koi before I did this, for god sakes I have had saltwater fish for years and did fine reading. And as for that amount of fish I have a lot of friends with that many. I know ammonia kills I have been testing my water daily since I placed them last 6 fish and my ammonia level has been 0 and yes the same time of day. I change about 10 to 25% of water weekly for maintenance. Oh and I am a woman not a guy. I did not come on here for the bashing I came for help. I need to know if the purple on the sides of my pond is normal or not so I can clean what I need to before before water back in.
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