White fuzz on decor

[Sahabo]

I have this recurring white fuzz on my ceramic shell. Last time I did a pwc, I washed it off in old tank water; I really had to rub to get it off. Within about a week, it came back. Any idea what this is?

 

[Zagz]

How old is the tank? If the tank is new it is a normal part of a new tank usually. If the tank is established I would guess possibly feeding too much causing over abundance of leftover food? Can you get a picture?

 

[Sahabo]

The tank was setup on 3/13, so just over a month old.

I only feed him about 6 pellets a day and he eats them right up. I watch him eat and I never see leftover food.

Here is a pic. You can see the fuzz on the top of the shell. If the water color looks off, it's because I'm treating my betta for fungus/finrot and there are meds in the water that turn it yellow.

 

[Zagz]

It doesn't look to me as if it is much to worry about. It may just be part of the new tank syndrome. I would keep doing what you are doing and it should probably go away on it's own.