Simple Doser

[pterfloth]

Originally Posted by Snaz

Looks nifty but what happens when the airline builds up crud or is warped out of shape by any number of reasons? I would think the volume of the measured length would change.

I'll let you know how it turns out in the long run. I'm primarily going to use this for DIY calcium and alkalinity additives. I don't get any precipitates in my mixing containers. I used rigid airline for the stems in the reservoirs. I don't think the coil will change much in shape. But we'll see.