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Why are my fish dying?
Background information: my fish (in both tanks) survived 10 days without electricity during hurricane Helene. So about 2 weeks later I got some Pygmy cories to add into my 20 long. I got 8 cories and already had a long finned betta and 8-9 chili Rasbora and some pest snails in a 20 gallon long. The old fish I had had since about 2021 so a solid 3 years. One Cory died within 24 hours and another died a day or so later but I thought they were just in shock or something. TBH I wasn’t worried about it since the remaining 6 were good and still are.
HOWEVER about 3 days after adding new residents I went on a last minute trip for a three-day weekend. My husband failed to inform me that my smart timer for the light malfunctioned on this tank and was left on for 48 yours straight until I found out and asked him to unplug the light so they could have some peace and quiet. He didn’t check on the fish at all but when I returned, the only survivors in this tank were 2 chilis and the new cories. My beautiful betta was being consumed by the snails :’( and the chilis except 2 met a similar fate.
Anyway I put the blame on the light situation and was able to get my smart timer functioning again and went and bought 6 small female bettas, all of which died over the course of the past three days.
Did I get a disease from the cories? How do I proceed? I tested the water and it is all normal, 0 ammonia 0 nitrite and about 20 ppm nitrate. I have had zero issues with my other fish tank during this time and both are well planted
Background information: my fish (in both tanks) survived 10 days without electricity during hurricane Helene. So about 2 weeks later I got some Pygmy cories to add into my 20 long. I got 8 cories and already had a long finned betta and 8-9 chili Rasbora and some pest snails in a 20 gallon long. The old fish I had had since about 2021 so a solid 3 years. One Cory died within 24 hours and another died a day or so later but I thought they were just in shock or something. TBH I wasn’t worried about it since the remaining 6 were good and still are.
HOWEVER about 3 days after adding new residents I went on a last minute trip for a three-day weekend. My husband failed to inform me that my smart timer for the light malfunctioned on this tank and was left on for 48 yours straight until I found out and asked him to unplug the light so they could have some peace and quiet. He didn’t check on the fish at all but when I returned, the only survivors in this tank were 2 chilis and the new cories. My beautiful betta was being consumed by the snails :’( and the chilis except 2 met a similar fate.
Anyway I put the blame on the light situation and was able to get my smart timer functioning again and went and bought 6 small female bettas, all of which died over the course of the past three days.
Did I get a disease from the cories? How do I proceed? I tested the water and it is all normal, 0 ammonia 0 nitrite and about 20 ppm nitrate. I have had zero issues with my other fish tank during this time and both are well planted
