Bloom Nutrients, Ocean Forest and Autoflowers

You can check my diaries for how I use Massive Bloom Formulation. I usually add 300 ppm 0.6ec of bloom formulation after button size buds form, then add the remaining ppm's of my bloom and a little veg nutes while their in flower. Stop using the Massive after 4 to 5 weeks in bloom, as it can promote foxtailing.

If you’re sticking with Fox Farm nutes, they publish a feeding schedule on their site. Like most, I’d recommend coming in about 50% of the recommended amount. At least until you get a feel for the strength. They can be hot, and depends a lot on your growing conditions. https://foxfarm.com/feeding-schedules

Okay, now I take it you are starting off with soil and only adding nutrients now? If this the case, then you wouldn't need to flush. As for what you have. I'd pick 1 and focus on that. If you have a few plants you can try 1 of each, or if you have 1 of the same strain do a few tests and see which 1 works best for you. But results don't lie, check diaries and see what gives the best results. As some brands of nutrients do not mix and can cause a bad reaction on your plants. What research have you done, have you seen this brands working in conjunction, stuff like that. Hope this helps some, good luck and enjoy.