Kent Marine Doser

[jabo]

Does anyone have one of these or another brand that they dont use anymore and would want to get rid of? Or does anyone know a good DIY doser?

I am having a hard time keeping my calcium up??

 

[MarineFlake]

Plastic milk container or pop container with a hole just big enough to thread a 1/4" line through, use a 1/4" plastic gate valve or the like to control flow (I used to use one of the wifes' hair clippy thingies). It does the trick if you are just looking to dose Ca or Kalk or really whatever. If you need more volume, you could splurg for a 5 gallon bucket : )