What is this on my CO2 injector tube?

[epicgear60]

I made a yeast CO2 injector that took a couple tries to make a successful one. Nothing fancy, just yeast, sugar, water, tubing, a bottle, and some glue. It's been a week and I just notices a weird hair-like substance that is growing on the side of the tube that dispenses the CO2. Looks kinda like the bacteria you see on the underwater exploration shows on discovery channel. Anyone have any ideas what it is? Sorry don't have any pics

 

[fort384]

Yes, it sounds as if it is floccuated yeast. This is a common occurrence with a yeast generator. The way to prevent this is to run a bubble counter/gas separator between your yeast generator and the tank, as per the diagram in this article:

Beginner's Guide to CO2 Injection in the Planted Tank - Aquarium Advice

 

[aqua_chem]

Hard to say without pictures. It's possible it's just algae if it's in a high flow, high light area.