I’m 100% on the BRS dosers with an apex.
You are not relying on an integrated dosing timer and it will be more reliable in the long run.
I’ve had my BRS dosers for 2 years now and they function great and are inexpensive.
If you don’t have an apex or controller, then other choices are reasonable now
I don't have a controller and don't plan on getting one for a good while; i have a 25gal AIO, so yeaah lol. Which is why i want a doser with wifi controls and stuff- controllers are crazy expensive.
GHL Doser 2.1 SA can be stand alone with up to four heads. Later on the course you can add GHL ProFilux as a integrated control center and can link the Doser 2.1 SA.
I read mix reviews of the ProFilux not having some features that are standard with Apex, like an app, and SMS and email alerts. Is that all true? Does the GHL connect to Apex?