Hi there, so i got these clones in rockwool, planted in a coco mixture. and these two Blue Afganis specifically seemed to have what i thought was a cal-mag issue, (specifically mag, but its not taking up nutrients from the lower growth, and the new growth seems really weak). While watering them the last 2 times, ive been giving them some cal mag. The coco mixture contained 4-4-4 all purpose, worm castings, along with some kelp and glacier rock dust, (lightly). I just want to see if anyone can identify 100 percent before i try to feed it something with more nitrogen, i've been PHing my water to 6.0.
Having a problem identifying this issue/defficiency!!
- Thread starter solo.dolo
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- cal-mag coco gaia green phing
OneMoreRip
Well-Known Member
id check ph and ec/ppm of the medium before making any other changes. (700 ppm/1.3 ec start to finish imo)
also if using ph down to get to 6.0 id go 5.7-5.8
and make sure ph pen calibrated
no idea how well your soil mix is.
also if using ph down to get to 6.0 id go 5.7-5.8
and make sure ph pen calibrated
no idea how well your soil mix is.
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Merlin1147
Well-Known Member
Have you scouted for russet mites?
soil mix is coco, around 20-25 percent perlite, some 4-4-4, and glacial rock dust, worm castings, and a tiny buit of kelp. been watering originally at 5.8 but i figured it could be a magnesium issue, (which is wasn't,) so i am back at 5.8. i unfortunately don't have a ppm pen. i've been told russet mites, cannot see a thing although im told they are smaller than spider mites, wierd how they only affected the specific strain, although maybe their mother carried them.
Green Refuge
Well-Known Member
You gonna need a 100x microscope for russet. I have similar symptoms which I thought were russet but after close inspections with 200x I can't find a single mite. It's either PH or disease.
OneMoreRip
Well-Known Member
id try not ph’ing a plant or two, assuming your tap is around 7. I didn’t realize, it seems like you are ~organic soil which requires higher ph.
i chech ph of my soil with regular ph pen (for liquids), gently press into moist/wet soil just until get a reading.
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Sorry for late ass replies, had a long week, i think my ph was to low, i was pretty much ph-ing for hydro, i might have even killed alot of the microbials
Upping my ph is most likley my resolve, thank-you so much, i grow soil usually at 6.5, so i thought i had to drop it for coco, was definitely wrong
hotrodharley
Well-Known Member
You'll go backwards listening to that fool. Seriously.
so whats your suggestion lol
hotrodharley
Well-Known Member
You need magnesium so certainly it needs calcium as well.
PadawanWarrior
Well-Known Member
What? Just because it needs Mg doesn't mean it needs Ca.
It could actually have too much Ca, and locking out Mg. I haven't looked at the pics yet though.
hotrodharley
Well-Known Member
Because he's in coco. That's why.