Jebao Dosing pump thread.

Can anyone just let me know what dosing line the dp2/dp4 will accept??? I think I'd like to use ro tubing over air line if possible. Any thoughts? Thanks
 
Just got one of these and i am trying it out. Just using cheap 6mm air line tubing. I noticed people saying it cant dose less than 1m. I got it dosing 0.5ml easily. All you do is half the number of turns during calibration. So if it takes 100 turns to dose 100ml then stop it at 50 turns. I am dosing red sea liquids A and B.

The issue i am having is that on one of my tubes the liquid is draining half way back down the tube. I am dosing into my display tank with the dose below the tank. The other tube is taking in a little bit air on the output side also.

I dont want to go dismantling the heads in case i break them. Where do I put the check valves? Is it on the end of tube at the output or down near the output of the pump head?
 
Recci,
Make sure both tubes are not in the water to avoid a siphon.
The cause may be the cheap tubing.
Get the right part for the pump.
 
Having trouble with my DP3 doser. It is 3 month old and starting to miss doses. If I set one of the pumps for 10:00, it will not start unless I turn the power off and on during that minute until 10:01. this does not do this constantly but enough to concern me. Any suggestions?
 
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