Sentry doser. Contains battery backup, precision dosing of 2-part or kalkwasser. Use as top off and can also be set to operate only when lights out.
More details here https://www.marinedepot.com/ps_Aquarium ... ander.html
This is the exact model I have. Asking $175
kalk, 2 part doser
Moderator: snoopdog
-
- Amoeba
- Posts: 90
- Joined: Sun Dec 16, 2007 9:51 am
- Location: Pensacola