For those not using a dosing pump, but otherwise automated dosing thingamajig...

[Oceanic]

Originally Posted by lastlight

I thought ca and alk are used in different amounts. Do you compensate for this by altering the concentrations of each solution?

Yes, as stated above, once the levels are adjusted manually they are supposed be dosed at equal amounts. The Randy Holmes two part mixture for calcium and Alk is calculated to replace the elements at the same levels they are depleted. I would not run two dosing pumps; however, you would want to make sure each tube that drips the elements are in a separate part of the system or sump.

Ian