This is a super old glass tank passed down from my dad. Got a filtration system that pulls water down through the gravel; also have an AquaClear 40-75 filter with sponge, carbon, and biorock.
Change your water.
Couple pieces of real driftwood to mimic the Amazon environment. All artificial plants now, plus a couple rocks.
New to fish tanks but it is a fun hobby.
Keeping anemones in a reef tank can be a challenge if you are not fully prepared.
Cultivating a nano tank can be an exciting challenge but unless you choose the right fish for your tank, you may be in trouble.
When you see signs of stress in your fish, you can then take steps to identify the source of that stress and then to resolve it before it becomes a major issue.