i step up from one to 5g day that i flip to 12/12 with np...i never let them start flowering then transplant...not to say it cant be done i just prefer not to ...disco seems to be more on track
DiscoB has it right. I have watched the root growth closely in DWC. There's very little root growth happening after 3 weeks of flower. It all goes into the flowers/seeds.
I always transplant at about 3 weeks flower. I don't have much room in my cupboard so I put them into flower when the others are at the start of their sixth week, then 3 weeks later I put them in the same pots as the ones I just cropped.
My pots are 9 litres and 18 litres (2.5 gallons and 5 gallons) and every single time i transplant they go crazy. They start to stretch more and the stem fattens. By week 5 you would never know and every time I crop them they just slide straight out of the pot, just one big root-ball.
The only time I have ever had a problem was when I compacted the soil to much, it completely destroyed my bubblegum. The thing just never shot up or fattened at all, it just froze in time. After 2 weeks i pulled it up to throw it out and the roots were exactly as they were when I transplanted it.
So I say do it, im no expert but i've seen it work on mine and no way would I finish it off in a 3 gallon pot. Just try not to compact it too much and you should be laughing.And you know if it does take a week extra because the roots are using up energy filling out the pot or something then who cares, I always leave mine until 10 weeks so it could be shock I guess but it's well worth it.
I have this problem now and Im going to tranplant from 1 gal pots 2 a 3 gal pot because my girls are root bound now at 2 weeks into flower and I want great yields so Im moving up 2 3 gallons pots and hope 4 the best.
Well guys I just transplanted mine yesterday some 2-3 weeks later (lazy ass) so I will check the progress of my plants closely over the next week or so. But when I went to transplant them, they were 1 solid root mass. So hopefully I can see a little more time in between waterings. The buds are really just now forming smaller than 1/2 inches in diameter just lil popcorn kernels. So theres alot more growing 2 b done. Peace and overgrow the world.