Aquarist for just over 20 years, I am on an aquamedic lagoon 400 illuminated by orphek or3 120 bars controlled thanks to 1 OSIX 120. And entirely under Aquaforest protocol with hybrid salt.
And all my corals and fish are fine with the temp dropping to 70 degrees.
Some good news is that I just received some Orphek OR3 120s for my tank and they're amazing! I will post photos once I get a good filter for my phone.