Are there any options for auto water changers?

[Benga]

I don't want to do any more manual water changes. I have the Osmo currently as my ATO and now that I've experienced the convenience of that I need it for water changes.
The only one I'm seeing though is the AutoAqua and one from Kamoer. What do people do for auto water changes here? I think the Neptune Dos can do this but then i would also need to invest in a controller for that i think.

 

[BrianReefer]

Spectrapure Litermeter 3 + extra pump. Expensive, but rock solid and years later with no issues you’ll be glad you went this route! AWC setup for 3+ years and going strong, very infrequent calibration needed and keeps salinity spot on.

 

[n2585722]

I use my Hydros to control my ATO and AWC.

 

[Pistondog]

I use 2 versa pumps. The DOS solution is loud.

 

[buddy.]

Been using the litermeter for years and years. Super reliable but expensive.