purple power 4 weeks flowering

i been flowering 4 weeks growth seems to be slowing down or i look at it to muchbut i got the plants in like a 3 gallon pots its two purple power plants should i finish flowering in the pots or transplant to a big bucket because the roots are starting to come out the bottom & the plant is almost 3 feet tall please help the plant is in verry good condition & i want a nice yield should i just be patient by the way the plant is mostly sativa i heard

Welcome to RIU

3 Gal pots are fine. Let them grow and u will be fine

thanks im parinoid

Nice, they're looking fat.No need to transplant,might stress them.

if your ever feel the need to transplant ..and are unsure..just cut the bottom out of the flowering container...and place it on top of another flower pot packed w soil..the roots will grow into the new soil..therefore creating giving new room for the growing roots and causing minimum stress..peace