bad week to have heater issues here in denver! For the hair algae, have you tried some platties? spend 6-8 hours acclimating them to salt and you have some beautiful algae eaters! Mine picks on the rocks and sand all day long
I haven’t although they are something I’ve considered. If the Reef Flux fails I might try them. I’m also thinking small tangs. Always great to hear from another Local!
I tend to run the minimum number of heaters on a tank. Generally the effects of a cold tank a minor when compared to a heater that fails on. I have had it happen too many times