plants not growing in flower

good day everyone, this is my first post, i had a bit of a disaster when my plants went in they where too small to go under my 600 light , it practilly fried them, i changed the light to cfls and left them for 8 weeks, lost a couple of plants but got the rest back, flowered then ay abot 8 to 10 inches, they have been in flower now for 4 weeks pistills are starting to go brown now but they have not grown at all, the tallest is 21 inches, not sure on the strain has deisel crossed with something else, they are healthy just not growing

i had same prob...been in flower for 9 days and on day 7 they started to take off. are you nuted good and plants have enough water?

yea have the right nuits, been on ionic producs from day on at right concentrations , soil grow, soil bloom etc, been watered soon as they need it, not sure if my pots are too small, plants are only 15 inches tall but all have buds

How big are the pots as a restricted root zone will severely stunt them... Its like asking them to run wearing cramped shoes!!! Lol!
My outside pots are at least 10 inches across at the top...

XXX

Check your ph sounds like they are just sitting there waiting for you to correct the ph so it unlocks the nutes. always check ph before trying to add nutes adn stuff because if you add nutes and then correct the ph they will get a large amount of concentrated nutes and burn. if you have already been adding nutes and dont know the ph flush with ph'd water first then correct the ph of the nute water after adding nutes. and do this every time you water with no exceptions. ph sould be 5.5 to 6.5 most people try for 6.0