Hi
I posted a thread last year about brown algae in my 800l tank. I had some help from members and followed advice and removed the pebbles in the bottom and replaced with aquarium sand just before xmas. Ive added Elodea Densa plants and the water in the tank looked noticeably clearer though even before it didn't look unclear.
My Nitrate levels with the pebbles were around 500ppm and since the changes and 50% water changes twice a week the Nitrates have come down to 20ppm but i couldn't get any lower. To do water changes i mix new water in a 120l drum and add API conditioner and get to same temp as tank before pumping it in.
So thursday i noticed a silver shark having stability issues so suspected swim bladder prob and added some swill bladder medicine, it was enough to do a 500l tank so a bit weak really. I came home from work to find a dead 6" tinfoil barb so did a 70% water change. This morning the 2nd large barb is dead in the tank. Ammonia 0, Nitrite 0, Nitrate poss 10, Ph 7.6.
About a week ago i added API Nitra-Zorb Pouch, Size 6 to both filters.
I don't know if the issue is:-
excessive water changes
the swim bladder medicine
The Nitra-Zorb
ut im sure im going to loose more fish. The Shark was euthanized last night as no improvement and the fish seemed to be suffering.
The fish that died looked in very good physical condition and i'm totally lost as what to do next.
Thanks Dave
I posted a thread last year about brown algae in my 800l tank. I had some help from members and followed advice and removed the pebbles in the bottom and replaced with aquarium sand just before xmas. Ive added Elodea Densa plants and the water in the tank looked noticeably clearer though even before it didn't look unclear.
My Nitrate levels with the pebbles were around 500ppm and since the changes and 50% water changes twice a week the Nitrates have come down to 20ppm but i couldn't get any lower. To do water changes i mix new water in a 120l drum and add API conditioner and get to same temp as tank before pumping it in.
So thursday i noticed a silver shark having stability issues so suspected swim bladder prob and added some swill bladder medicine, it was enough to do a 500l tank so a bit weak really. I came home from work to find a dead 6" tinfoil barb so did a 70% water change. This morning the 2nd large barb is dead in the tank. Ammonia 0, Nitrite 0, Nitrate poss 10, Ph 7.6.
About a week ago i added API Nitra-Zorb Pouch, Size 6 to both filters.
I don't know if the issue is:-
excessive water changes
the swim bladder medicine
The Nitra-Zorb
ut im sure im going to loose more fish. The Shark was euthanized last night as no improvement and the fish seemed to be suffering.
The fish that died looked in very good physical condition and i'm totally lost as what to do next.
Thanks Dave