Thanks For the reply Jedi.
I make RO into a 45g storage tank. I have the uv on the outlet of the storage tank so it only sees flow when I'm topping up or doing a res change witch is every day. Not really worried about the power usage, more life of the bulb. Which I read is 1 year.
Maybe I should run a return back to the 45 so some natural convection can circulate the water and keep it cooler. I'll put a lazer thermometer on it this morning to see how hot it gets.
Other stuff I have read is the newer digital igniters are not near as hard on the bulb during start and stop. I'm guessing most of the uv on domestic water sit most of the day with no flow so it should be designed for it?
The advanced water purification work I used to do was at this place in SillyCon Valley was to take secondary wastewater from the sewage treatment plant next door, run it through microfiltration, RO, decarb, UV, chlorinate, then store. I promise the water was cleaner than anything that came out of a tap even though it starts as flocculated and settled sewage.
Enjoy a tour of the Water Purification Center from the comfort of your own computer! Click on each number to view a short video on each process.
www.purewater4u.org
We used a train of UV sterilizers so some were in use while others were offline, then we would switch although this plant is built to auto-run 24/7 and should not really have any downtime other than for PMs.