Great info! I am switching from quickgrow lights on my 135 gal tank to 2-36” 3.0 plant. The lights will be suspended 3” above tank due to maintenance mostly and glass lids. This tank has been running for 3 years, crypts, swords, hygro, dwarf swords, Anubis. No CO2 nor will there be. Started using Thrive C at half dose and thrive root tabs 3 weeks ago due to nitrates at 20 ppm week end. Tank runs on a 60 gal sump, 28 rainbows so I do 50% wc weekly. I am trying to figure out best light setting. Current lights run for 4 hours with 2 hour siesta. Thank you.