KADE said:
When flowering you'd want your PH lower then what you currently have... 5.4-5.6... that little bit of difference woudln't do what you are saying tho.
That's what I did when I was in rockwool but in the aeroflo with hydroton I got some ph frying and leaf damage anywhere 5.8 or below.
KADE said:
Is your res nice n aerated?
plenty of water agitation along with small bubbles when the water falls from the tubes to the resiviour.
KADE said:
You do flush every so often rite? Changing the nutes up n everything?
every five to seven days I drain system completely. I mix up 20 gallons of clearex salt leaching mix. 10 ml per gallon and run it until the tds quits rising from the leached salts and tds. I then drain and rinse system. Then I fill system with approx 40 gallons of nutes and have a pump within the res for stirring things up.
KADE said:
Check your spray nozzles... the reason I changed from underneath spraying to top drip is cuz they like to clog up.
understood. I have a few sites without anything in them so a visual check is easy. After each harvest the system comes completely apart and the misters are flushed and "poked" to verify no build up is hapenning.
I haven't run the bleach mix through everything but I do get the system as "next to new" as possible between uses. I would rather take my time and "do it right" than rush and run into other odd problems.
The actual leaf problem I have (or at least have had in the past) doesn't kill the crop but I'm sure I'm losing some quality. It keeps my head doing fine but I would like to see a perfect green throughout the whole process.
Part of me thinks that it's the nutes being to strong but it's not a burn like I've seen before. I've overfert before and got the distinct leaf tip burn. As you can see by TBG's pix this is a bit more sporadic in where it effects the leaf.
This is my third try to avoid this issue and I only change one or two variables each grow to try and figure it out without confusing myself even more.lol
Thanks for any information and help. I will double time look over my garden for any pests.
edit Took another VERY close look and there is no pest contamination on these beautys.
Perhaps I should move my ph closer to the range stated. I take a reasonably long break between crops and my notes said the problem was worse when it was below 5.8 but perhaps it's a combination of over fert/ph.