Rust spots between vains

SuBlimE420

Well-Known Member
Wokeup to a couple of the upper fan leaves having some rust spots on them. Only on one of two plants grown from clones. The stems on the affected plant are also very pliable,l.

Soil, 10gl pots, 6.5ph tap water, using half FF nutes + calmag, 400w hps, day 9 flower

All advice welcome

Please pardon the shitty pictures. The last picture is how they looked when I flipped them.

Thanks
 

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Nickcg123

Well-Known Member
Looks like Ph fluctuations, or root problems as they both present themselves in similar ways. Have you calibrated tour pH tester recently?
 

SuBlimE420

Well-Known Member
Looks like Ph fluctuations, or root problems as they both present themselves in similar ways. Have you calibrated tour pH tester recently?
It's only about 3 weeks old, calibrated it when I got it and have been also using the drops to gauge it aswell
 

SuBlimE420

Well-Known Member
You could thin out some of the fans and tuck the rest. Get that light in there .... lol
You believe that would promote growth at the bud sites? Just shy of 2ft tall. Any thoughts on the damaged leaves?

Today is also feeding day, curious if I should up the cal mag and put some fresh FFOF ontop
 
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SuBlimE420

Well-Known Member
Could have been a ph issur at last feed, meter read 6.45 but the drops/strips were indicating in the 5 range.

adjusted it using drops/strips to roughly 6.5 and went with 100% calmag
 
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