I am going to continue on this theme today, mainly because of the facepalm memes from my dear friend
@ReservoirDog on the main SIP thread in response to me trying to share what I am doing here, with the group. I can only assume (since there was no real explanation) that the concern is over my insistence in watering from the top in my new SIPs while they get established. Your lack of comments and my desire not to threadjack that thread, has brought the discussion here to my thread, where I enjoy a good debate. Please, let's discuss this, without silly memes that might be making comments you hadn't intended.
The last several SIPs that I transplanted to, following advice, I indeed did wait without top watering until the plants figured things out and they started to use the water from down below. In each of those cases I experienced a 2-3 week stagnation as this process sorted itself out. I am sorry to throw contrary thought into the SIP discussion, but I am of the belief that not only is a 2-3 day stagnation counter productive to my grow schedule, but I don't think it is good for the plant either.
No matter what I do, that soil is still wicking. A little bit of top watering doesn't stop the roots from having to adapt to the overly wet bottom of the container so despite what I am doing, the plant does adapt to the SIP and the moisture gradient established in the container. Once enough specialty roots have been developed down below, other than the fact that I am using top fed nutrients, I would no longer need to water from the top to keep the plant vitality where I want it. But, until those specialized roots are formed, I see nothing wrong with using what is already there (the old rootball) to keep the plant properly watered and quickly growing.
Using this strategy, for the last 10 days since transplanting to 7g containers and putting them in a SIP, I have kept my plants vigorously growing without any discernible stalling out period. Not only are they growing up top so much so that I need to keep up with my training, but they are also growing new roots. I submit that they are growing new roots a lot quicker using this keep the plant healthy strategy than they would by letting the plant stall and then in desperation sending out new roots to the bottom water source.
Does this totally and permanently screw with the moisture gradient and the plant's ability to adjust to SIP? Apparently not. I invite any of you to this discussion... please tell me exactly why what I am doing is wrong or in any way harmful. The way I look at it, I didn't just lose 2 weeks in a stalling out period as I did in my previous SIPs. My plants have been steadily growing and widening out and getting ready to be sent to bloom, and when they get fed the next time, it will be their last 2 week feeding of the VEG formula. Following the old SIP strategy, my stalled out plants would be barely bigger than when I transplanted them 10 days ago, and this time would have to have been added to the VEG period while I waited on the plants to get big enough to go to flower.
This constant top watering isn't a permanent strategy, and I have only watered 2 times from the top in addition to what I would normally have done with the top feed and then a week later to wash it in again. These two extra waterings to keep the original rootball active and happy at this critical point right after transplanting seems to have made a huge difference. As the lower roots continue to grab into the SIP, the need for top watering (except for my nutes) goes away. For 3 days now they have gone without top watering, and they are looking great. I don't think I will need to top water again until 4 days from now when they get fed again and then after that I will let the SIP take care of things, only watering from the top once a week, and only enough to wash the nutrients down into the soil.
Here are each of the plants, just as happy as they can be. I had to trim several buds this afternoon to continue with the training, and a couple of days ago, I had to spread out the training hooks a little more. They actually have not stopped growing since the transplant... no shock, lots of awe and no stall.