"Dave" wrote in message
...
Hello from Mississauga,

I recently set up a 33 gallon planted tank and purchased one of these
Nutrafin thingys. I have a few questions about the bubble dispenser that
attaches to the side of the tank with suction cups. Are the bubbles
supposed to flow directly out of the airtubing into the dispenser?? The
bubbles from my unit just flow out of the tubbing at the bottom and bypass
the dispenser (for the most part)...and flow up to the top of the water
and
then pop. I thought they should get trapped in the dispenser...so I
attached a small pce of plastic to the bottom to guide the bubbles
directly
into the dispenser. When I did that....all the bubbles went directly into
it....and then flowed up each level of the dispenser...and then flowed out
the top of it to the surface and popped. No bubbles actually stayed in
the
dispenser...they just flowed out level by level up to the top.

Are the bubbles all supposed to go into the dispenser?? Is it normal for
the bubbles to flow to the surface without entering the dispenser?? Some
bubbles get caught in it...but not many.

How is the dispenser supposed to work?? How does CO2 stay in the water??

Any help appreciated...

Dave


The bubbles a supposed to get caught at the bottom of the dispenser and work
their way to the top, decreasing in size as they go, thereby releasing CO2
into the water. They then leave the dispenser and escape to the surface.

I had similar problems when I first set mine up, I found that the end of the
tubing from the fermentation canister wasn't inserted correctly at the
bottom of the dispenser.

The instructions say that it is normal for bubbles to by-pass the dispenser
when you first set up the system, this should stop after 24 hours.

Tony