Hi all, good thread.
I was quite an earlier adopter of LEDs, and the early fixtures i had didn't really make much difference... but i have found over the last couple of years, as LEDs have become more advanced and efficient, that the quantity of useful light that the plants receive can cause deficiencies to show much more quickly... especially in veg when the extra light seems to be 'too much' sometimes
In soil, one factor which is hugely influential is the pot size in relation to plant size. I find in a good soil that the plants will stay happy as long as the roots have plenty of soil to grow into...but as soon as the roots fill the pot and therefore limit the optimum uptake of nutrients, the leaves start to fade very fast.
In flower it is always best to use as much soil and as bigger pots as you can (or even a soil bed) - to remove the risk of rootbinding... and with modern LEDs this is even more important.
the other thing that has been pointed out is that LEDs make your grow run less hot, which can be good or bad depending on where you live... but it is always something to be aware of. eyesdown's post above mine describes this very well.
VG
I was quite an earlier adopter of LEDs, and the early fixtures i had didn't really make much difference... but i have found over the last couple of years, as LEDs have become more advanced and efficient, that the quantity of useful light that the plants receive can cause deficiencies to show much more quickly... especially in veg when the extra light seems to be 'too much' sometimes
In soil, one factor which is hugely influential is the pot size in relation to plant size. I find in a good soil that the plants will stay happy as long as the roots have plenty of soil to grow into...but as soon as the roots fill the pot and therefore limit the optimum uptake of nutrients, the leaves start to fade very fast.
In flower it is always best to use as much soil and as bigger pots as you can (or even a soil bed) - to remove the risk of rootbinding... and with modern LEDs this is even more important.
the other thing that has been pointed out is that LEDs make your grow run less hot, which can be good or bad depending on where you live... but it is always something to be aware of. eyesdown's post above mine describes this very well.
VG