hey man I'm just using a 300 wat led that came with my grow tent nothing special (china made)I got the topogrow tent setup came with everything. ill buy newer better equipment in the future tho. I started at around 20 inches with my light I had someone tell me the reason my plants dark green is because the light was too close and the plant couldn't actually grow so it got nitrogen build up that's why its dark green. I don't see clawing leave etc. so I moved to 30 inches it only grew around an inch in 6 days. btw good morning/afternoon to everyone hope everyone is well medicated. happy mothers day to the great moms on here.What kind of lighting are we talking about here LED , COBs ?? 18 " is too close whatever your using I would place them at 24" and see how she reacts a little stretching won't hurt even at 24 " IMHO .![]()