Aqau medic quad doser ?? And setup
 

I purchased a quad doser and have figured out the timing schedule,
My issue is I can't seem to get the air bubbles out of the lines to get a consistent amount every time it turns on.

I purchased check valves from King Ed but think they were the wrong ones.
Packing says for air pumps.

Currently I'm looking to dose ALk.

Does anyone else use this doser. I'd love to hear how you use it.

i use the twin doser

i submerged both lines in the mixtures to prefill the lines.
i use a check valve on the outputs of each line I found without one the line would slowly drain and then the next time the doser was actuated it was just pumping air

Thanks for the input, I've trimmed that also with no luck. Wondering if my check valves are no good.

Probably
When my check valve crapped out it was exactly as our describing
I use these http://www.jlaquatics.com/phpstore/s...t_ID=ap-jwapv0

With my doser(triple) i have check valves, on all the lines. Making sure they're installed accordingly. Check valves are cheap, and keep flow going only one direction, with no air backing up any of the lines.

I recently had the same problem. I have a check valve at the end inside the dosing container and one right before the output to the tube holder.

Thanks for all the input sounds like the check valve is the issue