The 125w fluro is not much light for that many plants.
Consider that a 400w hps really effectively penetrates 2 feet, i would turn those plnats now.
If you turn them at 2ft tall, the leaves lower down which are doing all the energy collection for the flowers wont be receiving light of any intensity and there'll be wasted time in grow.
Im trying a 130w daylight fluro now for the first time. im in a box about half the size of yours, if not a quarter. i've got 2 plants and will turn them at about 6 inches. theyre only 2 inches now.

water so you have 10% of the volume you put in come out the bottom. flush with ph adjusted fresh every 1-2weeks.
i dont ph adjust anymore but it can help.

the light colour is typical of lower intesnity globes i reckon. im gonna start foliar feeding mine silica once a week. magic that stuff.