Mr. Mike nailed it.
As a general rule;
Slower growth requires more drainage.
And less water.
Led grown plants are very easy to drown.
(well, suffocate, actually).
Roots will grow jus' fine, in aerated water.
View attachment 96935
It's stagnant water that kills them.
Using straight coco under leds can be tricky, so I switched to Sunshine mix #4.
It does drain better and breathes quite well.
Water less often and use freshly aerated water, and peat won't be an issue.
Jus' my 2 hard earned cents.
Aloha,
Weezard
Thanks Weez i need all the LED info i can get now broAs thats what im using now. Two 150 w bar's in a 4x2x5 tent, im in 12/12 from the 1st...........................
LSY
Sounds to me like he is suggesting a more expensive medium. $$$