I use the Hydros now and could not be happier. I have quite a bit of things automated. It controls the standard things such as return, skimmer, heaters and cooling fans. I also have the hydros controlling my ATO and AWC. It also controls my RODI unit and mixing station. It will auto refill my DI reservoir. I have a fresh saltwater reservoir for my AWC and that one is automatically refilled from my mix tank s the mix tank contents is ready for use. Once the mix tank contents has been transferred to the fresh saltwater reservoir it will automatically refill the mix tank with DI from the RODI. All I need to do is add the salt mix and press a button when it is ready for use. Everything else s automated. I also dose All For Reef and a KH buffer dynamically using alkalinity readings form the iV and X10. Once I get the Maven I will switch All For Reef to dynamically dose based on calcium. I also plan to dynamically change the amount of AWC based on nitrate level and see how that goes, I do it that way now but I have to manually change the amount changed after testing with the Hanna. I have a build thread on R2R that had a lot of info on my Hydros system. The Hydros info starts with my first purchase on page 6 post# 119. Just click on the My Tank Thread banner on my post to get to the build thread.