I have a small issue cropping up on one of my Northern Lights. Here is a quick look at my setup. Any questions, I'll be happy to answer them. The Room 4x5x8 Filtration Cool Humidity and Fan First grow, six weeks of 24/7 veg... Can someone please advise on what is happening with these tips below? Many thanks in advance. SM
http://static.grscty.com/uploads/monthly_12_2014/post-813037-14183095774631.jpg Diagram of common nutrient/mineral shortage or overabundance damage, to help identify potential causes.
It looks like, based on the chart provided, that it may be a beginning zinc issue. That's the only correlation I could make. We're going to flush for a couple of weeks and return to feeding after this clears up.
1st glance nutrient burn. have you considered moving the filter vertically, straight down along the frame? Leave enough room 2-3 inches so you are not blocking the air from getting in. it will give you some more clearance to adjust lights.
Considered but the penetrable limit of the lamps below the canopy is 36". I have around 75". A good recommendation nonetheless. Thanks!