18/6 ... I'm using now.. and 12/12 in flower.. but, I'm talking a "shorter day/night"... I really don't think the plant is useing every minute of light dark it's getting..I have seen alot faster growth on 18/6 then 24/0.....
I want to shorten the 24 hours down to 20 or 18...ie:vegin on a 15/5 and flower under 10/10....get it now?

let's see how fast the little suckers can grow...lol