Crispy golden-brown leaves and no smell

[athirdpath]

Strain - Sativa/Indica Cheese, Sativa Grapefruit Diesel, Indica Purple Kush
# of Plants - 2 Each
Grow Type - Hydro
Grow Stage - Flower, 8 weeks
Setup - Hand water from gallon jugs
Light - 600 Watt HPS
Nutrients - General Hydronponics Flora Nova, Calmag, Koolbloom, Sweet
Medium - Cocogrow coir fiber
PPM - Unknown, following genhydro schedule
PH - 5.8, recently changed to 5.5 to try to fix problem
RH - 40% to 55%
Room Temperature - 78 to 88
Solution Temperature -70 to 75
Room Square Footage - 27
Pests - None Known

Hey, nice to meet you. I'm a new first time grower and I'm having a problem in late bud. The leaves are turning a into crispy golden-brown mess, with the tips starting first and curling under, then the margins. The Cheese unfortunately have got it the worst and they are the largest.



I've been pruning them as they get bad, so I don't know if it will kill the whole leaf or not. It's the first problem I've had, but thanks to the dead reckoner at 420mag I suspect it might be K or Manganese deficiency.




I mix 12 one gallon jugs and hand water with a measuring cup twice to three times a day, until water barely seeps from the drain holes. I lowered the ph from 5.8-6.0 to 5.5 to avoid K lock, and I removed the dry Koolbloom and raised the lights to reduce stress. The leaves feel dry, and the crystals on the leaves seem to have fallen off. The buds seem stunted and don't reek like they used to. I've put many hours into this and I don't want to see my babies turn to ragweed!

Thanks!

[TBuds]

I don't c much of a reply over @ 420 for ya either, r they close to being done? It does look like a cal/mag problem but might be to late to fix? When in dought flush it out. Was wondering y u choose this type of grow for first time,sort of advance growing for first time? Have thought of going to this style but untill my med stash is built up,i"ll stick to the table. I did find this little tid bit out there. Good luck let us no how they turn out do check ur PH! - range from 5.8 to 6.1 works really well
do make sure you use nutes specific for coco! - this will give the best results and easy of use.
do make sure you use pots big enough for the watering intervals you want to have. bigger pots means less watering. but more water is needed to flush out properly.
do make sure you have run off when watering. about 20-40% is enough.
do make sure the coco never gets dry - this is a hydro medium. watering often gives better results.

DONT treat coco like a soil grow.