#tunze 3155

I have one NIB Osmolator 3155 ATO and two used 3155’s for sale. Sold as a package. $100 plus shipping

Hey everyone, I've had my 3155 ATO for about 10 months and recently it won't start the pump when the water level drops. This happens once everyday, I've found that nudging the optical sensor into the water for a second then moving it back helps, and it will work for serveral times until next...

Hi all, Hope you have been having awesome reefing days! I got a question for y'all that I couldn't find a good answer to, on the internet - likely because of my limited Googling-skills, so here goes - "Can you provide a mechanism by which I can make the optical sensor in my Tunze 3155 ATO send...