Marine color dosing pump?? ***?
 

Just got me a marine color dosing pump 6 channel but I have some qustions:

1: How do you calibrate it? I have read the instuctions but cant still figure it out

2: If I want it to dose at 1900-1915-1930-2000 - is that posible - or is it so that I set it to dose 100 ml it figures it out by it self to dose every 6 hours?

Thank you!!!!

And please spell it out for me....