I'm going to Veg them all in the same room with the same lenght of time, (same clones from same mother), then see what the yield diff is.
I did run my room a time before with the 3 gallon pots & they were all root bound by the end of Flower. didn't really care for 3 gallons, just to small. I'm just trying to figure out if all the money is worth the upgrade again to go to the 10 or 15 gallon.[/quote
There are a lot a variables you do not really go into in determining you pot size. A 15 gallon when properly trained and vegged can and should yeald at the very least 10 to 12 oz. If you are running one 15 gallon per 6oow light thats about right. You can run 4 plants in 5 to 7 gallons pot's. per thousand (sixes seam a bit light for the task but work) and with little effort you should hit a lb. If you get things rocken and learn your strains then you will find the sweet spot where there getting everything with out stress. Try not to root bound them. Get them transplanted when the roots have filled up the pots and give them room to keep growing. Remember that plants send less and less energy to root production the further you go into flower. Figure 2 to 3 week of root growth once they hit the flip. This will be your best indicator of when things should happen. All things equal more root will always yeald more! I found an almost exponential increase in yeald / gallon of soil. There is a point around 20 to 30 gallon's where the curve begins to flatten out. I've tryed 40 gallon's even. Great flower size but the increase droped off considerably. My back really screamed when moving the dirt around and the veg time does take a bit longet. Coco is a different story. I flower most soil in 25 to 30 gallon
smart pots and flower in 15 to 25 gallon
smart pots for coco mix. If you go coco then 4 properly vegged and trained plants in 3 gallon
smart pots on a tray can and should yeald well also. It takes time to learn the whens and how. The larger your grow the harder it becomes to keep up with it as well. If your dealing with limited space like in a tent I would seriously consider setting up a top drip dtw coco. You can do a lot more in less coco then in soil. You can do the same weight in 3 gallons of coco as you do in 10 gallons of soil. Plants grow a bit faster and fill out roots a bit quicker as well. Finished product is top shelf. Not quite properly grown organic quality but dam close. It takes quite a pot snob to tel the diffenence most of the time. I live in a med state and have limited numbers so size maters. If I was not so worried about plant count I would deffenitly run 4 plant's per 1000w in 10 gallons and expect 6 to 8 off of each plant. or better yet 16 in 2 gallon pots or.... The more plants you can fit into the space the less time you have to veg. Its al a mater of finding the proper timing for your chosen style . Hope I helped out best of luck.. Peace