whats the temp by the light its 5 feet away but maybe, do u not have a fan already? i couldnt tell from the pics
twitch Reviewed by twitch on . yellowing plants in fact yellow as can be I have 2 Durban poison and 1 skunk #1, 1st db going yellow with few browning leaf edges, 2nd db yellow as fook with browning leaf edges and the 1 that looks the healthiest sk#1 is now going yellow around the bottom leaves. all on grow for around 3 weeks they are growing in cocoa under a 600watt light around 5ft away. i have been feeding them biobizz grow with root juice mixed. i feed once every 2 days and was at about 2 thirds strength. temp around 78 degrees, PH 7 and humidity 50%. Rating: 5