I have no idea what I’m doing wrong. I’ve been buying platies one or two at a time for the last month or so. The most I had in the tank at one time was seven. They seem fine at first, but then loose interest in food and start hiding under the filter all day. Then they end up on the bottom breathing heavily for a couple days until they die. Those are the only symptoms. I’ve purchased them from multiple different establishments. I’ve only had two males, so it’s not that the females are dying from the stress of being chased. My tank water parameters look fine to me. The aquarium had been up and running for months before I started adding the platies. I even had some rainbow fish from a tank I was taking down at the time live in there for at least a month before I found homes for them.
Here is a quick list of tank specs and everything I’m using:
20 gallon tank size
Underwater filter with 40 gallon capacity
76 tank temp
Eco complete substrate
Dosing flourish fert in small amounts 2x a week
Lots of amazon swords for hiding
Below is a picture of the results from my test strips. It looks fine to me, but maybe there’s something wrong that I don’t realize. I also know that test strips may not be the most accurate way to test water and plan to take a sample into the LFS. This is really frustrating me to loose so many fish. I’ve spent so much time and money on this tank and it’s so disappointing to see it failing. I hope someone can tell me how to fix this.