I have a 29 gallon freshwater tank. The tank was set up 6 months ago, and up till now we haven't had any problems with the fish.
Our tank consists of mostly platys, one goldish, several neons, several catfish/corys, and one bamboo shrimp- all very mild mannered and get along great... about 15 in all. We have had them all together for 3 months with not one issue.
I test the water regularly, and in the beginning we had some issues getting the ammonia to zero (kept read low levels at .25 and .50), but after a proper cycle we have not had any issues at all with the ammonia. Even today, the ammonia read zero. Nitrates, Nitrites, in safe zone. No chlorine. Hardness is on the low side and always has been. pH always at a neutral level. Alkalinity on the low side. No live plants in the tank, just plastic.
Water temperature is consistent at 78 degrees. We have been doing weekly water changes, about 30-50% each time. With each change, we add Prime.
Yesterday, my husband and son brought home two new fish (red eye tetras). They were introduced to the tank properly, but we found them to be too aggressive in the tank so we isolated them. Not before they terrorized a few fish. It took awhile to get them with the net because they were so fast, and I am nervous that I freaked out the other fish trying to catch them.
I removed a few decorations in the tank while I was doing this and found two dead fish... now whether is was coincidence that they died, or the tetras nipped at them, I will never know. I decided to test the water after this, and noticed my pH was very low and water was showing much more acidic than normal. No ammonia.
Fast forward 5 hours... I go home and find my goldfish, a panda cory, and a platy are dead. I feel horrible, I don't understand what went wrong. It's as if the tank changed overnight.
What happened? How can I keep my other fish alive? Some look fine others look lethargic. No sign of disease, water is clear, but something is going terribly wrong!
Our tank consists of mostly platys, one goldish, several neons, several catfish/corys, and one bamboo shrimp- all very mild mannered and get along great... about 15 in all. We have had them all together for 3 months with not one issue.
I test the water regularly, and in the beginning we had some issues getting the ammonia to zero (kept read low levels at .25 and .50), but after a proper cycle we have not had any issues at all with the ammonia. Even today, the ammonia read zero. Nitrates, Nitrites, in safe zone. No chlorine. Hardness is on the low side and always has been. pH always at a neutral level. Alkalinity on the low side. No live plants in the tank, just plastic.
Water temperature is consistent at 78 degrees. We have been doing weekly water changes, about 30-50% each time. With each change, we add Prime.
Yesterday, my husband and son brought home two new fish (red eye tetras). They were introduced to the tank properly, but we found them to be too aggressive in the tank so we isolated them. Not before they terrorized a few fish. It took awhile to get them with the net because they were so fast, and I am nervous that I freaked out the other fish trying to catch them.
I removed a few decorations in the tank while I was doing this and found two dead fish... now whether is was coincidence that they died, or the tetras nipped at them, I will never know. I decided to test the water after this, and noticed my pH was very low and water was showing much more acidic than normal. No ammonia.
Fast forward 5 hours... I go home and find my goldfish, a panda cory, and a platy are dead. I feel horrible, I don't understand what went wrong. It's as if the tank changed overnight.
What happened? How can I keep my other fish alive? Some look fine others look lethargic. No sign of disease, water is clear, but something is going terribly wrong!