first time :)

hello iam currently doing my first little grow with 3 autos in a 50x90x5.5 ft tall space, in 3 gallon fabric pots,using bio bizz lightmix,under a kingbrite qb288 lm301b 240w full spectrum led,will be using mega crop nutrients at around 2-3 weeks, the temp sits around 22-25 degrees during the day...