I'm in the process of ridding my 120 of GHA with an ATS. I slacked on making a new ATS when moving to my 120 DT and paid the price of GHA. ATS worked amazingly on my 55g. More powerful version in my 120g should make quick work of the GHA.
My question: Will reducing the light time help in a significant way to reduce GHA more quickly? Or, am I just saving electricity? I currently run a 8hr photo period without dusk/dawn.
Additionally, what is the minimal light cycle I can run to help starve the GHA in my DT while still providing enough light for SPSs?
Out of curiosity, what photo period does everyone here run?