Hello, I established my fish tank 2 months ago. It's 30l with 6 guppies. Yesterday I noticed that one of the guppy was hiding between plants and a couple of hours later I found it dead. This morning I found another guppy dead outside the aquarium and they never used to jump out. The other fish seem stressed as well (glass surfing).
My water is good (see picture) , exceph Ph and Kh which are usually a bit higher, but I decided not to mess up with it and keep it stable. The temperature is set to 25C. I perform weekly or biweekly partial water changes but since the aquarium doesn't have a lid I fill dechlorinated fresh water more times per week. I think I feed them just fine. None of the fish (dead and alive) have any discoloration, spots, nothing.
I'm trying to find what's going on, they did fine until now and were happy. Any advice is much appreciated.
My water is good (see picture) , exceph Ph and Kh which are usually a bit higher, but I decided not to mess up with it and keep it stable. The temperature is set to 25C. I perform weekly or biweekly partial water changes but since the aquarium doesn't have a lid I fill dechlorinated fresh water more times per week. I think I feed them just fine. None of the fish (dead and alive) have any discoloration, spots, nothing.
I'm trying to find what's going on, they did fine until now and were happy. Any advice is much appreciated.