Organic Nutrient switch to Jacks' 321

Is there any reason to not switch from an organic fertilizer over to Jack’s 321 at 4 weeks of flower?

And if it’s fine to do; is there anything I should do differently?

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None whatsoever my coco is front loaded with organic nutrients and microbes and i start using jacks day 1 because i believe the microbes actually break down the hydro nutes to make them available faster then in inert oh but just remember last 1-2 weeks to just give plain water to clean them out( flushes aren’t necessary)


Hit them with full strength?

Yea go for it though in flower i adust it to 3.8-4 grams A ,2 Grams B , and 1.2 epsom

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Thank you!