Bubbles in BRS dosing effluent lines

[dubmaneh]

Hopefully you got this figured out but if not, how old are your dosers?

I had the same problem with BRS dosers losing their prime after a few years. After driving myself crazy checking all the connection points, it turned out the internal tubing was old and losing the seal. It looses its elasticity over time and needs to be replaced every so often (I think they recommend annually).

 

[Volcmreefer]

Still have bubbles but they aren’t exiting the effluent lines. I am thinking about switching my tubing to the rigid type to see if it helps. Thanks for the follow up!