Duetto ATO with overflow skimmer

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Works perfectly. Used for ATO or auto water change with skimmer overflow.

Sumpless Auto Top Off System - XP Aqua

Xp Aqua's Sumpless ATO - Complete ATO & Surface Skimmer for Sumpless Aquariums Sumpless ATO is the first and only ATO designed specifically for aquariums without sumps. The combination of the sleek overflow box and the innovative dual-optical sensor ATO will help to keep your aquarium topped...

www.bulkreefsupply.com

 

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[Reign1]

Looking for one for my AIO small tank .. can you use it w/o that box? Just the sensor ?

 

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Looking for one for my AIO small tank .. can you use it w/o that box? Just the sensor ?

Yes definitely the box is just an accessory totally not necessary to function. You just have to put the little pump in the tank somewhere it is super tiny thats if you want to use it as an automated water change vs just an ATO.