Just an update - the system is still in progress. Everything has been functioning fine so far, so now it is time to work on the fail safe system and a better method of electrodes. I will keep everyone posted
How's your system doing? I would really love an automated water change system. I'm on well water so I don't need to add any checmicals but the water changes are wearing me out. LOL
Thank you for posting your project, so when are you to market?
I've seen racks of tanks with automated water change systems. Setups with a centralized filtration system are easy, auto fill the sump which has an overflow, water source on a timer. Carbon filter to remove chlorine & chloramine.
A buddy of mine has this set up for individual tanks, self starting siphon in each tank, water line run across the top, inline carbon filter for the source. Valve on a timer, he had it set up with a remote control bypass at one point, click the remote & change water.
I'm in the process of setting up something similar for my tanks. I don't like the lower flow rate of the overflows, so I have most of my tanks drilled. These run into a bin with a pump that I'm using for a sump, this summer while putting in a bathroom downstairs I also plan on putting a sump in the fishroom. Water is already run to the room, just need to run water feeds to the tanks, inline filter & timer, & let it rip.
If you could get your project built into one small unit with a supply & drain line that folks could just plug & play you might see a market. What I and others go through is worth the time for many tanks, but is a bit overboard for the aquarist with a tank or three. An easy set up & use unit might be attractive to these sort of folks.