Slim overflow

[Bubblehead8292]

40 gallon with a slim overflow operating full siphon. 75 gallon build with same slim overflow will operate full siphon too. The boxes do not use any external rear boxes, durso, stand pipe or muffles. Box has a small footprint on the rear glass, the main drain unit is submerged and provides up to 1600 gph full siphon flow regulated to match main return pump with a gate valve, the non submerged unit provides backup/emergency overflow safe guard with no valve necessary. Easy tinstall, easy to service. Extremely quiet. Available at facebook: tristate aquariums llc

 

[theMeat]

Looks cool
Where’s emergency/back up?

 

[Bubblehead8292]

Looks cool
Where’s emergency/back up?

If you glance at the pictures. The overflow unit on the right facing the aquariums is the back/emergency unit and the overflow unit on the left facing the aquariums is the primary drain full siphon. With no air in the main drain, no cavitation or gurgle noise. I need a cleaner crew for the bottom of the 40 gallon that has a magdrive 18 on it and water flow is quiet. No internal pumps and a lot of water motion.