A little advice?

I have currently a 216w HO flouresent light and a 1000w hps light for flowering.
how can i maximize my yeild. i grow in soil. but readying a hydro setup.
how much can i yeild max?

With that kind of limited info have no idea how much you can yield, but a good way to help increase yield: In the last 3-4 weeks of flowering, pump your plants full of water! Keep the pots in trays so water doesn't go to waste! Don't let them get thirsty, even if you add f*** all nutes, make sure they get plenty of water!

A few strains don't like a lot of water, but that's very few strains, most love it!

thats what i thought but the person im doing with thinks they should "thrive".
but the information i gave is all i have right now. i use foxfarms tiger bloom and do a dose every week
should i do more? my plants are roughly 4ft