m0useanswered grow question a year ago I would stick with Gaia Green, I used it a lot in the past with great results. Just remoeber to mix it into the medium every 3 weeks.
I also find that it need a bit of extra Magnesium and Potassium. I use epsom slats to give it a boost of mg and I mix in some of their soluble seaweed extract for the potassium boost.
I also mix their all purpose 4-4-4 and power bloom 2-8-4 in different ratios. 2:1 in veg and 1:2 in bloom
you can 100% switch to a salt based feed like miracle grow 20-20-20 it just may not have all the micros the plant will need or 2nd dairy macros like Ca, S, Mg,
The ratio of 1:1:1 nor NPK is ok but not ideal for blooming plants. but it will work, if its all you got then use it.
Good Luck!