In my endless effort to achieve "good circulation" around the tank, I now have an obscene amount of flow. My tank is a Juwel Rio 125. I have one 1250 lph Eheim external filter, and a 1000 lph internal filter pump. Accounting for displacement, I have around 20x turnover I reckon.
Flow is delivered via two separate spray bars, facing in the same direction (from back of tank, forwards towards front wall).
Since upgrading from the 600 lph internal pump to the 1000 lph, the fish are hiding a lot. The cardinals seem fine with the flow, but the Pentazona barbs hide at the back of the tank, and I never even see the cory (trilineatus) anymore. When the pump is off during a water change, they all come out and are active and happy.
Also, I lost a barb yesterday. It showed no signs of illness or old age. Can high flow actually kill fish through exhaustion? My fish seem very tired.
So, is high flow bad for fish health? Does anyone even care? Whatever problems I've had on this forum, I've always been told to "improve my injection/ distribution regime". Well, I've definitely done that now, but I'm concerned about my livestock.
Flow is delivered via two separate spray bars, facing in the same direction (from back of tank, forwards towards front wall).
Since upgrading from the 600 lph internal pump to the 1000 lph, the fish are hiding a lot. The cardinals seem fine with the flow, but the Pentazona barbs hide at the back of the tank, and I never even see the cory (trilineatus) anymore. When the pump is off during a water change, they all come out and are active and happy.
Also, I lost a barb yesterday. It showed no signs of illness or old age. Can high flow actually kill fish through exhaustion? My fish seem very tired.
So, is high flow bad for fish health? Does anyone even care? Whatever problems I've had on this forum, I've always been told to "improve my injection/ distribution regime". Well, I've definitely done that now, but I'm concerned about my livestock.