u/Dependent_Vast_1348

Hi everyone,

I’m pretty new to fishkeeping and could really use some advice.

I have a 20-gallon tank with 5 tetras, mollies and khuli fish. My son recently found a couple of sheephead minnows stuck in rainwater and wanted to save them, so we added them to the tank.

Unfortunately, the minnows started nipping at the tetras, and now some of the tetras have damaged fins.

I’m worried about them and want to do the right thing.

•Should I remove the minnows immediately?

•Do I need a hospital tank?

•Is there anything I should add to the water to help the fins heal?

•How can I tell if it’s turning into fin rot?

Any advice would really mean a lot — thank you! Is there anything I should add to the water to help the fins heal?

•How can I tell if it’s turning into fin rot?

I haven’t tested my water yet (I can if needed), but I can do a water change right away.

Any advice would really mean a lot — thank you!

What else should I add plants wise or am I doing something wrong? Add any more rocks move stuff around? I’ll take all the help I can get!

I’m not sure what happened a lot of the hornwort broke down yesterday and I ended up getting them out and did a half water change . Added co2 like always and water clarifying. Also what else should I add to make it look better ?

Is the hornwort dying? Should o take it out?