White/clear, Jelly-Like Substance On Heater And Suction Cups?

[YouBelongToMe]

Hey guys,
 
I have a 5-6 litre bowl that I keep my betta in and a few weeks ago I bought a heater for him. However, just today I noticed this white/clear substance covering the heater and the suction cups, its also on the resting leaf suction cup that I keep in there for him and I just wasn't sure if it was harmful or not. He seems fine and like his normal self but because I only just noticed it I wasn't sure how long its been there for. When I swiped some off and rubbed it between my fingers it appeared kind of like jelly. I do try and do weekly cleanings and I do test for ammonia. If anyone knows what it is and if its harmful or not that would be great. Also if its harmful, how I stop it from coming back. I never got this stuff when I didn't have the heater in there. Here are some pictures and thanks in advance!:

 

[Ninjouzata]

I know you didn't come here for advice on your betta, but what you're keeping him in is really too small. Take a look at this: http/www.fishforums.net/index.php?/topic/423364-betta-splendens-caresheet/
As to the heater, it looks like some sort of fungus but I really don't know  

 

[the_lock_man]

I've never really found out what that gunk is, but it is very common in new set-ups, and goes away on its own. Presumably it's something to do with the increased temperature, since it only appeared when you added the heater - that's something new I've learnt today!
 
Good job that you got the heater, they are tropical fish, and need warmer water. But like Ninjouzata said, 6 litres is a bit small for him. If space is limited, then a 20l tank will do him fine.

 

[Ch4rlie]

Yeah, i don't really know what that stuff is either, i had some in my tank and I simply took it out with tweezers, comes out in one go and is a sort of jelly like substance.
 
Did not do any harm at all and never came back.
 
Also, snail egg is like a jelly like substance as well but you would see tiny little bubbles/sacs so thats a difference.
 
+1 on recommendations to get your betta a bigger tank, minimum 5 US Gals/20 litres will make your betta so mach happier and swim around a bit more freely showing off beautiful fins