Help with stunted growth

https://growace.com/blogs/learning-center/how-to-fix-nutrient-lockout

Looks like most likely nutrient lock out flush the growth medium with 10x volume water 3-5x if using a serficant like Wet Betty Sledgehammer or Just some dish soap let it dry up then feed properly

A whole host of problems result from PH fluctuations... get that under control and you should be good!

Probably a CALMAG deficiency . growing in DWC is tough if you are a beginner . PH has to be stable! Water temps cannot get too high. System cannot or is not recommended to use organics as nasty stuff can grow and cause issues.

Its because of the nutes ur using and the ph, make sure you ph to 6 - 6.5 during flower, make sure you PH after adding the nutes. In my experience, flora trio was just a basic nute feed. You need more phosporous and potassium for big buds. Try green planet they work well with DWC. Just flush these girls with 6.0 ph water, adjust the light distance and try to add something else stronger than flora trio. Or just add more of the bloom and cut out your grow bottle.