I have a question: what could be the cause for a sudden mass death of all the apple snails in one of my tanks?
Recently I have had a lot of trouble (leakage) with my tanks and I had to change water a lot. To speed it up (I usually use 'aged' water) I applied some water conditioner Aquavital
in two of my tanks. I was very careful about the dosage. It all went well.
Then I had to do the usual clean up in my tank at work and decided to use that conditioner as well. I might have been a bit careless with the dose - but only just a bit. In a couple of days I discovered that all my applesnails - about twenty were dead! One fish - a crooked rummynose was found dead too. But the rest of the fish population was perfectly alright - about 15 cardinals and neon tetras, black neons and rummies, ancistruses as well.
All my tanks have applesnails in them. Nobody was hurt, but the snails at work. The stuff container and the description note do not give any warnings concerning the snails. But something went terribly wrong... Oh yews, the temp was as usual - 25C - and the filter works well and is regularly cleaned. I would suggest that the fish - tetras - would go first if there was something wrong with the water.
That was a sad mystery, but maybe someone could kindly shed light???