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Ok say, the cree leds are more efficient, every 2 year I spend £100 (12 crops) and swap the bulbs, so there cheap and easy to replace. The cree panel sound very expensive compared to the bulbs and I don't really see any advantages, sound like you would still need 25w ft2.

74 sound too low to me, I would keep the temps closer to 80. never grown auto's and the 113 days is putting me off lol often flower my plants for 50-60 days after 4-week in veg. That's less than 90 days in total, guess auto should be finished in 80 days or less or there is no point growing them.

My led panel is covering a 1.1m x 1.2m and it's running less than 400w, really this is the maximum light I can use before it starts to bleach my plants, these bulbs are very bright, in a 3ft x 3ft I would not go over 250w

So I need 25w ft2 to keep the whole canopy between 40k and 50k, the center is slightly lower than the outer edges, and I use chicken manure to feed my plant with some other dry plant food, basically the same as all the expensive bottle nutes. my corners are nearly 50k @12", 20k@36" WOW, you...

Yes it's amazing, I have built the panel, no heat, max harvest, you need 24w ft2 You could use 8 x 12w leds or 9 bulbs in a 2x 2

Guess you think there's a big difference, leds are leds, there all the same, A high quality led bulb and a good quality led grow light are going to be the same quality, the grow light maybe something 5% more effective and last longer, ( run cooler). It's just like going back to hps bulbs, more...

Looks amazing, guess no one can say, you messed your plants up or you going to pull a lower crop because it's so clear you have pulled this off really well.

I have reveg my plants a few times over the years and I can tell by looking at the fan leaves, single blade leaves, some grow uneven, the hairs on the buds are normally brown, clear crystals on the large fan leaves where they have grown out of the bud. There lots of signs if you know what you...

I would remove all the large fan leaves, the canopy is far too thick, plants can't move or breathe. don't think there is room for the water to evaporate from the top of the soil and this is effecting the root mass.

your plants are in reveg, do you know?

you're on the same page as me, in general, I think most LEDS on the market are not very practical, the light spreads is not even, and their too powerful, so most growers end up turning them down, wouldn't be great to buy an led for a 4ft x 4ft flower room(800par) light spread covering the whole...

You're right I use led bulbs and use about 20-25w per ft2 anymore and it's too much light. I think 11w ft2 is a little low but that depends on the LED and the plant you are growing, some plants need less light than others.

Do you really soak the root mass, water when the top 2-3" is bone dry(lift the pot and feel it's getting light?

yes I would remove the 4 top large fan leaves, this will cause the canopy to bush out, you will have lots of top shoots in about a weeks time

Would Main-Lining full under this category? You do remove most the leaves, there set way of doing it.

It's not a good example, do you know how to correctly Defoliation? look back at post 501 Each top bud site has a set of fan leaves, the plant needs this set of fan leaves and must not be removed. This will collect all the light for this bud site. as you go down the shoot, you have lower bud...

who said removing 90%of the fan leaves was a good idea? The OP removed 100%

you want lots of main shoots on a single plant, problem is 8 main shoots on a plant is going to have 8 times the fan leaves in the same space, just not going to give you the best results, you need to thin it out one way or another.

If you grow a plant and don't train, topping firm etc, your right no question there. But as soon as you start training the plant, you need to make adjustments, for example topping once might be OK but if you top 2-3 the canopy becomes very bushy and the lower thinner shoots are stretching for...