The apex pricing seems very reasonable for a commercial system ... i would consider monitoring a must have right next to inline backup power and standby pumps.

But i'm interested in working on a DIY version for home use.

glebetron. What do you use to collect data? from your picture i see you are currently tracking (or plan to track) temp, water level and flow.

I would like to do temp, flow and ph as a minimum. Would also be interested in ppm (conductivity?)

My background is system administration but i write a lot of code for my job to automate tasks. I am good at algorithms, logic and decent at database design and implementation. I have put some thought into a project like this. Maybe design probes using aduino. but i am not skilled in ee or aduino and was never motivated enough to try to learn it.

brian