I guess the problem would be that flower power, spt, and the rest of BMO's lineup are all organic and work by maintaining a healthy microherd of beneficial bacteria and fungi. These beneficial microorganisms don't care for chemical fertilizers like FF's grow.

I guess the most cost-effective thing to do would be to get a bottle of the Grow it green from BMO and replace your FF w/ it. I know there's only a feeding or two left before they begin to flower but they may need some extra nitrogen during flowering. The whole deal with BMO is that they make the plant able to be a much more efficient eater...so there are less nutrients than in other fertilizers.

I'd flush your soil out well a couple of times and feed once with the BMO grow. Then when they begin to flower feed with water and spt and then a few days later with the flower power. Then you could probably use about the same schedule as is on the FF website except subbing in the bmo products.

Angus-
First time grower here, i live in the Sierra Nevada foothills in Ca. I've read many posts and you seem to know your shit! Looking for a bit of help. I'm doing an outdoor grow, in the ground, 22 plants. 10 Germinated seeds, 12 clones of different ages and types. I germinated the seeds May 20th, put into the ground June 4th with the first 3 clones. The last 9 clones went into the ground June 13th. I have been feeding them Fox Farms Grow big, and just started feeding them Big Bloom. They look great!
I was going to buy more big bloom (expensive stuff) then i seen a thread about nutes for bloom season and you suggested to someone to use Blue Mountain Organics. So i looked them up, and i really like what they have in their products. I just ordered a bunch of their Flower power, and Tonic. My question is when do i stop with the grow big, and when do i introduce the tonic and flower power, and how much? Hope you don't mind answering a few questions.

Thanks,
Treemansbuds