ghl 2.1 sa doser

I have a barely used KH Director with the 2.1 Standalone Doser. Both items were only taken out of the box to do the setup and then put back into the packaging. I decided to go with a Trident since I ready have an Apex. I am asking $700 or obo.

Hello All, So, I was a Mindstream user, and when that device bricked last fall I experimented with a few other alkalinity controllers to see how I liked them. I tried both the GHL KH Director and the Focustronic Alkatronic on my 200 gallon system. I decided that I liked the Alkatronic best, so...

This is probably the most solid piece of equipment I’ve ever owned with a reef tank other than my ATI PowerModule. I like this pump so much that this was my 3rd one. So easy to dose from your phone and will dose down to 0.1mL. Will dose 150x a day automatically or 10x a day with programmed...