Dosing 2 part

[Djplus1]

I use dosers from reefdosingpumps.com

Do you use the Nautilus 2, by any chance? Looking at the website, it looks like its just one pump, but says its capable of doing both parts of 2 part simultaneously. So does that mean ou can use one of these $179 pumps to dose 2 part?

[AlanM]

Look at the accessories list. It is two tubes going into one dosing motor. Both chemicals pulled at the same rate, so you dilute them to the ratios you want. Still would have to add magnesium once in a while.