Black dots on diy co2?

[Vikkiog]

Hey guys what's the black dots on the airline tube I'm using for my diy co2? Some form of algae? It's not anywhere else in the tank.

 

[Lepomis]

Looks like it. Are the spots on the outside of the tube or inside. If inside could be mold if you managed to get any of the sugar/yeast stuff to blow up in the line.

 

[Vikkiog]

Thanks. It's on the outside, hopefully it doesn't cause any problems. Just rubbed it all off into a water bucket so we'll see if it comes back. Just wanted to check it was nothing thats gonna be disastrous

 

[Lepomis]

Probably some sort of release agent or component leaching that the algae finds beneficial for growth. Should go away most likely in time.

 

[Vikkiog]

It's on my driftwood now :/ if you can see it on the photo. But then it could've been there before and I probably wouldn't notice.