They are a bit greener the one that had iron deficiency is recovering a bit . But the fan leaves are still drying out the RH was 25 when I checked and the towel bone dry temp was high of 25 low 15 I wet the towel .it I can't get Rh up ,then I'll get humidifier .
fan leaves burning,...(henryface)
- Thread starter henryface
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I've posted pics at last
It does looks like potassium def , I thought at first it can't be because it's in batmix but I've just read plagron bat mix s npk is 3-15-4 so its possible it's k Def . I've been thinking cal mag. It's been such a headache I've thought it's been so many things .now I'm thinking of quarter strength sensi bloom may help ? I've only got the location for a max of 6 more weeks right now it's looking like total failure.
I think the def is caused by PH too high and locking out some nutrients. 6.9 runoff is high. your soil is probably at 7.4 PH some water to 6.2 and water to run off. , let the pot dry a bit, a couple days, then water again and test the runoff. if you runoff is 6.0-6.5 your good
oof! yeah, that some hard water alright,... a few rounds won't be too bad, but cumulatively, the build up of CaCO3 will force pH up, and blow what buffering the AN has away! And it explains the pH jump,... yes, hard water has CaCO3 in it, but no MgCO3 (or very little), and likely not in available forms,... it's mere presence doesn't mean it's in a form that can be taken up by the roots,... Good on the rain water! be sure to stay with the Ca-Mg, nice available forms in there...
Don't get pop22 started on flushing! You should read his Myth Buster thread on this, very good insights there,...
... But as mentioned, IMO, when it's do or die, a plant that's really TARFU, it may save it, but the quantity needed is at least 2-3x the pot volume, or it won't do much,... think of the soil as a coffee cone filter,.. as you pour though, the concentration at the bottm goes up and up untill you finally put though enough to purge out the loaded water,.. it's a pain, a mess, stressful to the plants, waterlogs the soil which messes with gas exchange (this is what overwatering does),... so as you se, if done, it's needs be done right, and fast, less than 20 min.,...
OK, all this said, that RH% is not good at all, and might be part of what's going on,... low RH stresses the plant, transpiration-wise,... that the evaopration of water through the leaves, and is what in part pulls the nutes and water up from the roots,.. if that shuts down even partly, the flow of nutes follows in kind,... you can get longer term defc. issue caused by this, even if nutes are present,... did you hang that towel so it's well open and exposed? More surface area to evaporate from,...
.. really need those normal light pics mate,... pop22 might be onto something, but I can't see well enough to spot K defc.'s classic margin "teeth" browning pattern. well enough to confirm.... longer term/ advanced Mg defc. will start wasting along margins though,... and if the Ca-Mg/rain water is helping, that might be the deal,...
Thanks for the advice I put proper pics up finally , hung the towel up as best as possible. I'm going to keep with the calmag with rain water and maybe quarter strength bloom nutes to get some k in them would that be helpful , I
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