Who Gives A Fish Forums

You can kill the cyanobacteria with meds, but it's just a Band-Aid solution - it'll come back if you don't tackle the root cause of the problem. Your tank's got issues that need fixing, like inadequate water changes and too much light.

I'd recommend bigger, more frequent water changes - at least ...

I've never used chemicals to kill cyanobacteria, but @sSjey might be able to help you with that.

If you're not using a hose to change the water, I'd suggest you start doing so. That way, you can be more precise about siphoning out the cyanobacteria - it tends to come off in big sheets. To be ...

I'd say start by siphoning out the cyanobacteria with your daily water changes, don't worry if some sand gets taken out, you can always top it up later. Frequent and big water changes will really help dilute those excess nutrients that the cyano's feeding on, so give that a go and see how it goes.

To help you figure out what's going on with your betta, it'd be great to know your water hardness. Betta generally do best in soft water. Considering the fin issue, I'd recommend doing bigger water changes more frequently - daily, in fact - rather than every two weeks. Fin rot often stems from poor ...

Anything else in the tank with the Kribs? Got a spare tank to move him to while she's in protective mode?

Good news that she's alone in a nice big tank - that's a great start. You might want to try feeding her some frozen brine shrimp, see if that tempts her to eat. And don't forget about those water changes - bigger and more often can make a big difference. Also, think about the lighting in your tank ...

Relax floranza, we're getting there...

So, how long have you had these two female bettas? What's the tank size like? Are they the only bettas in there? And what are you feeding them, exactly?

Bettas are best on their own, to be honest. That ammonia issue, though - it's a big problem that needs sorting ASAP. Your tank isn't cycled, and that's why you're still getting ammonia readings. I'd recommend doing 70% water changes daily until it's all clear - no ammonia, no nitrite. It's a pain ...

Appreciate the thanks, starlite. Now, let's get down to business - tank size and how long it's been running? How often do you change the water and how much do you swap out? What's the feeding schedule like, and what are you feeding her? Also, is she solo in the tank, and have you tested the water ...

Can you get some more pics of her tummy area? I think that'd help us get a better look.