Dosing pump question

[ctripi]

Looking to dose cal-alk for my tank build.

Do the digital displays for dosing pumps like BM and similar products adjust based off a factor of volume or time. I am aware of the need to real world calibrate.

 

[hersheyb]

It's usually by volume, unless u go with the brs dosers that are set at 1.1 ml/min


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[marioensf]

Some adjust by the tubing size/inner diameter as well.