I read and read and try to figure out why a guy with so much info and resources doesn't listen to reason or is willing to learn a little more. We all learn every day, you should do the same because from what Ive read you do have a real good knowledge base but do to your arrogants and old habits you spit in the faces of others willing to communicate with you. Im sure I could learn a lot from you and visa versa if you could be civil and not think your info is correct while ALL other are just plain wrong.
Here is my take on your orignal comments.
LIGHT You recommend 20/4 for vegging in one sentence then down the pharagraph you comment on how light saturation harms the plants? 20/4 doesn't saturate them? Actually the recommended light period for any indoor grow whether cannabis or vegtables is 16/8, if your concerned about saturation. Plants in nature rarely get a concentrated amount of light for any length of time. Indoors we manipulate many things including light. The key to blasting the light to them is height control. Putting these plants under hid lighting is not a natural state, light saturation in the plants happens to every garden every day. Knowing what to look for is the key to indoor lighting, many people call it nitrogen defficient when they see it, when really they need a rest from the light. You gotta remember were pushing these plants to the limit.
Temperature and the importance of day/night differential Temp. changes from day to night is a myth. Studies have proven this, with a little research and reading you can find this information anywhere. Once the lights go off metobloical changes occurs just like in humans and the plants systems slow to a crawl. Carbo intake does increase but nightime temps have little to do with the amount of uptake. The actual rule is your temp difference should NOT be greater than 10 degrees, keeping the room at a constant temp has little to no effect on the plant or its growthr rate. Again this is indoor gardening and when old outdoor techniques get put into the mix, these myths get started.
Watering technique I have to agree with you on this one, another myth, the wet/dry cycle can have an adverse effect on the growth rate and can and does stress the plants.
Fertilizers Again I agree with you but have a different outlook on fertilizers. It is very easy for a newb or even a veteran to get themselves into trouble if they do not know the science behind it. Most growers do not want a degree they want smoke. I always recommend using a nutrient line of products because the science has already been done by the company and allows the grower time educate themselves.
Foliage production This is where your oldschool outdoor ways fall short. Leaving foilage alone results in smaller buds in a indoor enviorment. Most people have grown tomatoes so I'll use them as an example. Removing the suckers from a tomatoe plant is exactly the same for cannabis. Leaving the suckers on a tomatoe plant will result in a loss of total weight and all the fruit will be generally smaller. Suckers would be the little growing shoots along the stems before the main growing shoots Same technique applies here also, by removing suckers and foilage below a certain point will result in bigger flowers towards the top and a larger yeild is the result.
Upcanning (repotting) Sorry but this is another outdoor technique. When re-planting, stress is your enemy, cutting and hacking roots will just result in a stress plant that will take longer to re-establish and start vigorus growth. The only time you should cut roots is when you are completely root bound and if this happens then you have done something wrong before this point and you should check your schedule. Being indoors we have different factors to watch for, Changing ground level on re-plant can also cause a hole bunch of issues including ROT. This technique is not recommended for indoor or greenhouse growing.
I think you are taking outdoor growing and trying to bottle it for indoors. There are a few similarities but in general were talking apples and oranges and really...take a walk through your nearest greenhouse and maybe ask a couple of questions, these are the people you want knowledge from when it comes to indoor growing.