Anyone have any experience with it? GHL just donated a system to us for the next raffle. Looks really good and the reviews all talk about ease of use. Certainly their dosers are all the rage.
https://www.marinedepot.com/ghl-profilux-4e-aquarium-controller-starter-set-white
https://www.marinedepot.com/ghl-profilux-4e-aquarium-controller-starter-set-white