I have been following this Journal for the last couple of weeks and I am sooo amazed and appreciative of all the information you have provided. Thank you for all your diligent work on this wonderful journal.
I do have a couple of questions (sorry if someone has already asked them):
1 What is the total weight (dry) that you're getting out of the Roto-Gro?
2 How much weight are you getting per Strain (average per plant)?
3 You said that you used a Roto-Gro capable of growing 320 plants; is there any reason you chose to add 216 plants over 320?
4 If you were to do the Journal again would you add 320 plants to the Roto-Gro?
Thank you again for this wonderful gift that you have bestowed on us!
Welcome aboard - glad to see you are getting something out of this.
1) I do not have any idea on dry weight. This is my first time running this. In fact, this is my first hydro grow altogether.
2) Same as above
3) Great question! In order to fully max it out, I will need to drop down to 3"x3"x2.5" grow cubes (from the 4"x4"x2.5" I use now). This represents a reduction from 40 cubic inches of root grow space down to 22.5 cubic inches. A net reduction of nearly half. In my experience, the key to success is healthy roots. Roots that have enough surface area to support the plants needs throughout its life cycle. For this initial test, I opted for the larger cubes and have been pleased with the results. From the pictures, you can see heavy root mass even in the 4" cubes, so I am thinking this was a good decision. With subsequent runs, I might try the smaller cubes to see how they fare.
4) I have many things I would do differently now that I have some hands on experience. I have been compiling my list and will post an after action review post at the end detailing all of these (this is the final gem of info I will part with). To answer your question, it would be strain dependent as to whether I would attempt higher quantities. Some strains are substantially larger than others in this grow, with an upwards of 3-4x mass. If your goals are maximum yield, I would opt for smaller qtys of the larger strain. If the strain is relatively small (Grand Daddy Purple, Purple Kush, etc.) then it will likely be a good candidate to completely fill the system.