Its mainly magnesium deficiency (with a little bit of K def thrown in there), you're doing great keeping the pH stable at 5.7 but try and keep it around 6.0 even around 6.3. N, K, Mg, Ca, S, Mo, are all elements available to the plant at a pH of 6.5 and higher, so keeping your pH that low is adversly affecting your plants. To supplement magnesium add a couple of teaspoons of epsom salt per every gallon of nutrient water you use.
Magnesium Deficiency - Causes yellowing on the leaves that mixes with the green creating a marbeling affect, which then leads to leaves spotting and dying (turning that nasty brown color)
Potassium Deficiency - Leads to an upward leaf curl on the edges and tips of the affected leaves then said tips and edges will turn brown and die (just like Mg)
Phosphorus Deficiency - Makes your stems purple.
Flushing procedure:
Hydro-
Empty res, and fill with clean RO water - run your system for 3 days, refilling with clean RO water whenever the res is empty (within those 3 days), at the end of the 3 days empty the res and refill with 50% nutrient water, work that for a week or half week then bump them up to 100%
Soil-
water plants with RO water, 3x the amount of the plant base (5gal bucket = 15gal water), continue watering for about a week w/ clean water, after about a week continue w/ your normal watering schedule w/ about 50% nutes the first watering to 75% or 100% on 2nd or 3rd watering
When doing hydroponics, always use RO water. Or water that is under 50ppm (which i believe the max rating for RO water) is good too. For Anyone else who says they've gotten away with using tap water they are just lucky (some places around the world have super clean tap water, try not to use it if its anything over 100ppm).
Enjoy!
-V
that and this was my first time veg'n under MH and that seems to fix the stretching problem I've always had with this strain. so flush with plain water and work my way up every day with more and more nutes? what's the real proceudure? even a good link would be great. thanks for coming from that other thread. much appreciated!
