ATOs for a 40B and 20L

[jason7274]

I want to add a couple of ATOs to my tanks and looking for advice. Having done a little research, I cannot find any with glowing reviews. What would everyone recommend for a 40B and 20L? Both are sumpless (40B is a canister and 20L has a fiji insert) and rimmed, so I have to work around those. I like the RB Prism, but would only be able to use it in a chamber on the 20L. No idea about the 40B. Any thoughts would be great!

 

[Steve Burton]

I use this on a 40B or 20L with a hang-on-back filter when I have a quarantine set up.

 

[stephenp84]

Amazon.com: AutoAqua Smart ATO Lite SATO-260P Automatic Top Off System Water Filler Refiller Water Level Controller w/ Pump (SATO-260P) : Pet Supplies

 

[snowmansnow]

Ive been a fan of the Osmolator for a long time

 

[Reefer-Madness]

I'm a big fan of XP Aqua's Duetto ATO. It has an alarm for if your reservoir runs dry and an alarm for if it starts dumping water. Mine has been working great for a couple of years now. I haven't had to replace the pump even though I dosed kalk through it for a while.

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[Rickdareefa]

I'm a big fan of XP Aqua's Duetto ATO. It has an alarm for if your reservoir runs dry and an alarm for if it starts dumping water. Mine has been working great for a couple of years now. I haven't had to replace the pump even though I dosed kalk through it for a while.

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This has been my favorite for 3 years although I have to replace the pump once a year but it's only 20$

 

[jason7274]

Amazon.com: AutoAqua Smart ATO Lite SATO-260P Automatic Top Off System Water Filler Refiller Water Level Controller w/ Pump (SATO-260P) : Pet Supplies

Picked this one up a couple weeks ago and it’s working great!