chickenkev
Aquarium Advice Apprentice
Hi guys,
just a quick question, I have a 120l (approx 30gal) with the supplied Juwel bioflow 600 filter (rated 600l/hr) and a few plants in, had a red-tailed shark and 8 Harlequin Rasbora. Temp stable at 25.6-8, ammonia and nitrites 0, nitrates <5. 5 days ago I added 5 neon tetra and 6 cardinal tetra. Knowing they're sensitive I tried to acclimatise the cardinals slowly in a bucket of tank water by adding a little tank water to the bag every few minutes for 45 minutes. Unfortunately one of the cardinals jumped out when I was trying to net them across and I had to gently pick him up and put him in the tank. On day 2 a cardinal died, and I figured it was the jumper and due to stress. Another died that day and again I thought stress, they're known to be sensitive and tetchy. Now another cardinal is lethargic, almost unmoving in one place, opening and closing mouth, not interacting at all. All the other fish in the tank seem happy and playful in the powerhead jet, and are alert. I cannot see any external sign of disease on any fish. Again temp is stable and ammonia nitrites are 0, nitrates <5. Any ideas?
just a quick question, I have a 120l (approx 30gal) with the supplied Juwel bioflow 600 filter (rated 600l/hr) and a few plants in, had a red-tailed shark and 8 Harlequin Rasbora. Temp stable at 25.6-8, ammonia and nitrites 0, nitrates <5. 5 days ago I added 5 neon tetra and 6 cardinal tetra. Knowing they're sensitive I tried to acclimatise the cardinals slowly in a bucket of tank water by adding a little tank water to the bag every few minutes for 45 minutes. Unfortunately one of the cardinals jumped out when I was trying to net them across and I had to gently pick him up and put him in the tank. On day 2 a cardinal died, and I figured it was the jumper and due to stress. Another died that day and again I thought stress, they're known to be sensitive and tetchy. Now another cardinal is lethargic, almost unmoving in one place, opening and closing mouth, not interacting at all. All the other fish in the tank seem happy and playful in the powerhead jet, and are alert. I cannot see any external sign of disease on any fish. Again temp is stable and ammonia nitrites are 0, nitrates <5. Any ideas?