Is this a zinc problem?

nattybongo

Active Member
Growing in a DR120. 600w HPS (24" away, moved upto 27" now). 6" ruck & CF & SMS fan controller. Growing in a waterfarm. Only neuts she's had is GHE softwater micro at 2.6ml per 8.5ltrs. Temps 26/28c lights on. 16/19 lights off.
PH has creeped upto the range 7.1/7.3.
I've lifted the top chamber of the water farm and put a few drops of PH down in for now. Take test soon.

Top leaves are on the bright side and a bit wrinkley. Some of the leaves at the stem are curling up a bit on the top leaves aswell.

Sorry pics isnt the best. My camera is a bit old.

View attachment 1929781 View attachment 1929782
 

bigv1976

Well-Known Member
It is very difficult to diagnose an issue with a plant when you take the pictures under an HPS light.
 

*BUDS

Well-Known Member
PH has creeped upto the range 7.1/7.3.
I've lifted the top chamber of the water farm and put a few drops of PH down in for now. Take test soon.
you better get it to 5.8 or they will get worse.
 

nattybongo

Active Member
I had it down to 5.5. Last reading is at 6.0. Going to check again in teh next 30mins.
How long does it take for it to recover? Since i'm using RO water at a 017 PPM, the only neut I have been using is GHE (softwater) Micro. This stuff only has NPK of 5-0-1. I was going to introduce a small amount of floranova bloom in the next res change. Just hope the roots havn't had too much lockout and will start taking up neuts.
I'm also starting to get small brown spots on the lower leaves. There still green but there a more spots now than yesterday. Not too sure but after some reading I think it is because I don't have enough Nitrogen, Potassium and Phosphorus? The FNB has a NPK of 4-8-7 so it has more P & K than the micro, which is the only thing this plant has had yet.
 

0calli

Well-Known Member
Your first question how long to recover well a few days or up to 2 weeks fully but now you say spots on your leaves so that adds to the issue now and here is a chart for leaf deff.View attachment 1931497BUT THERE ARE FEW DEFF IT COULD BE SO THROW UP A PIC AND I CAN GIVE YOU A FOR SURE SAY TO ADD TO YOUR OWN HYP. FROM THE CHART
 
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