Hello All,
Hoping someone can help me with a big problem. After 10+ years of fishkeeping, I have now lost 7 of the 14 tetras that had formerly been living happily in my 29 gal planted tank for years. I do a weekly 50% WC and gravel vacuuming and clean out the cannister filter every other week. This has been the routine forever,
The only change that seems to coincide with this die-off is changing the filter outflow from a long spraybar to a simple swivel hood attachment. In both instances the outflow is aimed directly at the co2 diffuser, sending the bubble down and out on a long, merry ride through the water. Plants have been happy and growing vigorously.
Am trying to figure out if the changed outflow may have somehow increased the co2 concentration to unhealthy levels. One evening I did find them breathing at the surface in a corner, but I have two reasons for not confidently determining excess co2 to be the cause:
1) Unlike the handful of times in the past when this had occurred, turning off the co2 and taking steps to maximize surface agitation did not change their behavior within a short time.
2) The die-offs had started several days before.
I am presently wondering if the changed outflow caused a slight co2 buildup to the point that the fish were being slightly stressed all along and had finally had enough, eventually needing to headi to the suirface
Thanks for reading, and all help appreciated.
Hoping someone can help me with a big problem. After 10+ years of fishkeeping, I have now lost 7 of the 14 tetras that had formerly been living happily in my 29 gal planted tank for years. I do a weekly 50% WC and gravel vacuuming and clean out the cannister filter every other week. This has been the routine forever,
The only change that seems to coincide with this die-off is changing the filter outflow from a long spraybar to a simple swivel hood attachment. In both instances the outflow is aimed directly at the co2 diffuser, sending the bubble down and out on a long, merry ride through the water. Plants have been happy and growing vigorously.
Am trying to figure out if the changed outflow may have somehow increased the co2 concentration to unhealthy levels. One evening I did find them breathing at the surface in a corner, but I have two reasons for not confidently determining excess co2 to be the cause:
1) Unlike the handful of times in the past when this had occurred, turning off the co2 and taking steps to maximize surface agitation did not change their behavior within a short time.
2) The die-offs had started several days before.
I am presently wondering if the changed outflow caused a slight co2 buildup to the point that the fish were being slightly stressed all along and had finally had enough, eventually needing to headi to the suirface
Thanks for reading, and all help appreciated.