BINGO!
Ranco hot & cold dual is all I have ever used...everything still alive after 12 years[/QUOTE
Unfortunately, I don't have the expertise or the skill level that you have in any way shape or form. Your success in reefing is beyond words. I've only seen one other tank that exceeds yours and it's about the same age with a 700g DT and he doesn't use a controller either. Both of your tanks are unbelievable and honestly uncommon.
However, my Apex has allowed me the ability to take two week long vacations a year for three years without anyone tank sitting for me. My attention span is very short and I can lose focus easily. So keeping an automated system has allowed me to continue my passion for the hobby without worrying more than is necessary and making critical mistakes.
And no I don't work for Neptune. Lol.