water current killing my fish??(long!)

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mikeymikee

Feeder Fish
MFK Member
Jan 7, 2010
80
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NY
i have a 150g freshwater tank...water conditions are perfect!!!! trust me testd it 3 times... i have a overflow filtration with a 40g sump...2 pumps in the filter with a uv light... i also have 2 powerheads on the right side of my tank pushings the water to the left side to the overflow...now heres my question...


when u look at the top of the water u can see a good current flow going to the left side of the tank... i have plenty of air in my tank... but heres the weird thing... i house a catfish about 8 inches(i had for a year) with a jack dempsy about 5 inches(5 months)...i had the tank running for 2 years so bacteria is good... the past 5 months i only had those two fish that are doing perfectly fine with no problems... but when i get any type of new fish they die the next day!!!...it seems as if they suffocate with lack of oxygen?? ...amonia is 0...and like i sed other 2 fish are doing fine..no heavy breathing or nuthing...got no dieseases...water is cystal clear... even if i get them 1$ cray fish thery die about 2 days later out of nowhere...its driving me nuts... i bought 2 parrot fish that both died the next day...also got a small cichlid fish that died.all fish brought home were acclimated perfectly!!!..the other fish do not pick on anything i put in the tank... i kno this was very long but idk wut it culd be besides to much water current thats suffocating the new fish?
 
Are there hiding places for the new fish. Some time new fish get picked on when you are not looking. And as you said you have a large current in the tank. The only other thing that stands out to me is the UV. When you say uv light and you meaning UV sterilizer? For freshwater fish tanks that are well filtered and properly maintained you really don't need a UV sterilizer. Saltwater hobbyist may have a good reason for getting one because of the high price tags of many of the saltwater species. However, most hobbyist really don't need one if they are doing things properly. Doing things properly would mean using a Quarantine fish tank for all new fish and performing frequent fish tank maintenance.
 
mikeymikee;4762376; said:
^^ yes plenty of hiding places... ^^ both levels are good of the nitrates and nitrites
Click to expand...


"Good level"
"acclimated perfectly"


Numbers my friend, we need numbers. When I say numbers, I mean time of acclim/water temp/PH...

I think they died from a PH swing. We won't know until you give us more info...

The "flow" has nothing to do with it IMO. Especially with the stock you named.
 
Did you try to take away some of your water current and see if you can put new fish in that would not die?

I had that happen to me before where there was a lot of water current from my powerheads and when I put new fish in, they would die.
 
^^ i guess ill take one out when i get another fish and see what happens...i did a lil research in my fish room... i got a parrot fish(2 months ago) the day i put him him he got rele bad...heavy breathing turning white and just laying their...put him in a bucket with a air hose and he got better in 2 days and was back to normal...( did lil water changes in the bucket with the fish tank water!!!...put him back in the tank and the same thing happend till icame home to late and he was dead...weirdest thing in the world...
 
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