What is this?

[Owp]

I have just recently got a new 25 litre tank and have had it set up for just over a week now. I got the fish yesterday only but the heater has some strange white slime on the top of it - it started before I got the fish. Please can someone help some of the fish are eating it.

 

[coralbandit]

That is just 'slime' which can grow on plastics like airlines and such.
Just wipe it off. No big deal or problem.

 

[Owp]

That is just 'slime' which can grow on plastics like airlines and such.
Just wipe it off. No big deal or problem.

Ok Thankyou ??

 

[Mebbid]

Technically, I believe it's a biofilm. A collection of microscopic organisms, typically bacteria that colonized a surface.

But yeah, as was stated earlier.. it's not a big deal.

 

[Owp]

So I should just wipe it off and will it keep growing back?

 

[Mebbid]

Personally I would ignore it until it was time to clean my filter. It's fine to wipe off whenever. The slime will likely go away once the tank matures a bit more.