GHL has the most impeccable record when it comes to making aquarium dosing systems, the likes of which have been imitated by so many other manufacturers. The GHL Maxi Doser takes the same proven recipe found in the Doser 2.1 and uses higher capacity stepper motors and higher volume peristaltic pump heads to deliver a dosing system that is more refined for moving around larger volumes of water.
GHL has designed the Doser Maxi to have nearly all the same inherent features as the Doser 2.1 including WiFi and myGHL cloud support, built-in ports for level monitoring from float or optical sensors, onboard manual override buttons and fluid monitoring. The wifi and level ports are limited to the standalone version of the GHL Doser Maxi which will cost $369 while a simplified and cheaper Slave Doser Maxi priced at $319 will need to connect to a GHL controller or master Doser 2.1 to operate.
You should be able to operate a multitude of Doser Maxis to accomplish a variety of tasks from automatic water changes, auto top off, calcium reactor feeds etc. This is a significant increase in dosing pump flowrate to meet a wide range of applications requiring up to 350ml/min per dosing pump head, or around 20 liters/5.5 gallons per hour.
GHL will be shipping the Doser Maxi on December 4th with special pre-order pricing of $329 for the standalone version or $279 for the slave unit, making them both $40 off if you order by November 27th. [GHL]