Redsea ATO+ Question

justintime742

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Hey everyone,
Happy Friday! I have this slight issue, I just purchased a Redsea ATO+, and I absolutely love it. However I have a small drip on the anti-siphon device, the bottom portion drips, top most no issue. I’ve tried reinstalling the tubing and making sure everything was a good fit, no luck being drip free. Currently I have it rigged with one of my girlfriends many hair clips just to avoid water dripping onto the floor and flagging a leak warning but I’d like to get it to just be leak free. Unsure if it’s a manufacturing error and I should contact Redsea, but figured I’d ask you guys if anyone else experienced it. It’s a 5gal slim reservoir running about 4 ft to my BioCube.

Thanks in advance

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justintime742

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This is actually how it should work. If you read in the manual it says that this siphon breaker is dripping water when the ATO is working
Thank you! So if that’s proper, should I cut the tubing closer so it’s over the backside of my BioCube closer to where the top off is to avoid dripping onto the floor? My confusion in the manual was I read every page and no where could I find an explanation for the siphon breaker other than where it should be when installed on a Redsea sump.

Edit: Just reread and said it should drip back to the reservoir. But I have the 4.8G Reef Can and the drip wouldn't end up back in the reservoir due to the cap with how high the line has to go up, in total the tube is 4.5ft to get to the back of the tank.
 
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Reefer_Marc

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This is actually how it should work. If you read in the manual it says that this siphon breaker is dripping water when the ATO is working
So if that’s proper, should I cut the tubing closer so it’s over the backside of my BioCube closer to where the top off is to avoid dripping onto the floor? My confusion in the manual was I read every page and no where could I find an explanation for the siphon breaker other than where it should be when installed on a Redsea sump.
I just did it like that (not a good picture) but i put the siphon breaker about 3 cm above the pump, so it will just drip back into the reservoir. Im sure it can also just drip into your tank, since its just a few
20260710_170902_E15DC161-B127-4F1F-8917-B65FA78F9547.png

drops
 
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justintime742

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I just did it like that (not a good picture) but i put the siphon breaker about 3 cm above the pump, so it will just drip back into the reservoir. Im sure it can also just drip into your tank, since its just a few
20260710_170902_E15DC161-B127-4F1F-8917-B65FA78F9547.png

drops
Gotcha. I guess my goof was seeing that the siphon breaker was at the same height as the water level in the diagram. I appreciate it!
 
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justintime742

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If you have the reef can, the cap is made to allow the anti siphon fitting to sit in it and drip back into the container
Awesome! Thank you! Just so I am understanding correctly, the siphon breaker doesn't need to be at the water level of the tank? I apologize I'm new to ATOs and used to topping it off myself.
 

Reefer_Marc

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If you have the reef can, the cap is made to allow the anti siphon fitting to sit in it and drip back into the container
Awesome! Thank you! Just so I am understanding correctly, the siphon breaker doesn't need to be at the water level of the tank? I apologize I'm new to ATOs and used to topping it off myself.
As far as i understand it, it just needs to be on the line, somewhere it can drip off so there cant be a siphon that empties out your reservoir
 
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justintime742

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If you have the reef can, the cap is made to allow the anti siphon fitting to sit in it and drip back into the container
Awesome! Thank you! Just so I am understanding correctly, the siphon breaker doesn't need to be at the water level of the tank? I apologize I'm new to ATOs and used to topping it off myself.
As far as i understand it, it just needs to be on the line, somewhere it can drip off so there cant be a siphon that empties out your reservoir
Fit like a glove. Thank you all for your help!

20260710_120121_612CB4AF-6220-4B53-95D3-F48415BEBE44.png
 

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