Hi, I have made a DIY bubble counter from a 500ml pop bottle. I can see the bubbles coming from the Nutrafin canister into the counter, but there's nowt coming from the counter to the diffuser (ladder supplied with Nutrafin system)... I'm pretty sure I have no leaks :? as I've sealed the holes with sealant. Will this counter not work with the Nutrafin system? Should I just forget the counter? I put it in to stop the yeast mixture getting into the tank so I'm not sure what to do.