Originally Posted by katie592
I need opinions. I bought a new male crownfish Sunday, and bought him a small 1gal bowl. Wednesday, the tips of his fins started turning white and fuzzy, and it looked like they were falling off. I started a thread in diseases and it was suggested that he had fin rot, so Thursday I completely cleaned the water and he started to look much better almost immediately. Today (Friday), it looks like the white is coming back again.
Is this because of his small environment? I was told that bowls were fine for bettas, but he's turned out to be a really great fish and I want to make sure he gets through this. Should I buy a filtered aquarium? Will it make a big difference?
Fin rot occurs due to water quality, along with damage to their fins, whether a small rip or a bite taken out of it (could of had it prior to you bringing him home).
A one gallon is fine, but you have to take into consideration, in an unfiltered 1 gallon the recommended water changes are 1 50% and 1 100% per week, along with water conditioner. You can't go based off how the water looks- as the most deadly of water conditions are invisible. You will also need to find a way to heat it to keep it at a steady temp. They are tropical and do better in 76-82*F, without any temp fluctuations- which could be harmful/deadly. Smaller bowls can be hard to heat as finding a good heater that won't over heat, or under heat can be tricky.
For fin rot, I would go ahead and use 1 tsp of AQ salt per gallon; pre-dissolved prior to putting your guy in it, along with water conditioner and daily 100% water changes. You can try to do just daily 50% water changes for a week to see if that will clear it up if you wish. If neither of those work, you can look for a fungus medication.
Originally Posted by Tikibirds
Isn't fin rot supposed to be black, not white and fuzzy?
I dont think it would make a difference if its a 1 gallon or a 5 gallon as long as water matience is kept up.
There are two types of fin rot- the most common is the bacterial one, which is black on the edges, can be crusty looking, and flaking off.
The other is a fungus form- which is what the OP described. Usually it eats away at the fins in a more even fashion, but still eats away the fins to the body just the same- in time can be deadly if not taken care of. Columnaris also can look like it at the very very early stages, but since it disappeared and returned, it seems to point more towards the fungal fin rot.
I personally use 1-2 gals for all of mine, but I'm willing to do the extra water changes since they are unfiltered. One gallons can be a good home with the proper water changes, proper heating and if they have enough plants to hide in, and if you can, a cave of sorts. I can't always find a cave I like, so the ones without a store-bought cave I use cups or larger quartz rocks I set up to work as a cave. So really, it's not a bad size as long as it's taken care of properly and it's a clean, warm enviroment.