ChinoGOTiT
Member
Yellowish brown spots and a little curling in leaves.... Not too sure what the problem is.....
Yellowish brown spots and a little curling in leaves (PICS)
- Thread starter ChinoGOTiT
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LT1RX7 Drifter
Active Member
classic phosphorus deficency, it could be from a ph lock out check your ph's of your run-off as well as your dirt, water every 4-5 days watering is only a small parts of whats happening
NateDizity1420
Active Member
Looks like a P/K def. maybe Mag. def. Ive been having similar problems w/ Phosphorus def destroying the lower halfs of my plants and i cant figure out why, because my ph is right where it should be
Serapis
Well-Known Member
That hardly looks like a Phosphorus defficiency.... It is more likely to be Ca or Mg.
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ChinoGOTiT
Member
What is your recommended ph, i've heard 5.5 to 6.5 and i have heard 6.3 to 6.9. i try to keep the run-off between 6.3 - 6.9
LT1RX7 Drifter
Active Member
deficiency during flowering result in lower yields, during vegitive growth it will slow the growth with small leaves older leaves effected first, will show signs or blue and purple hues, but over fertilizing can result in chemical burn. cold weather below 50* can make phoshorus absorbtion very troubesome. for this reason soluble p such as found inin water soluble bloom formulas can add flower yields, (p) is a mobile nutrient, can be found in greensand and rock phosphate for glow release over the life of the plant
LT1RX7 Drifter
Active Member
6.0 dirt or water that way you have the largest buffer possible to prevent lock out
ScrogThis
Active Member
That looks like a Ca or Mg deficiency, a phosphorous toxicity can exhibit similar symptoms as can a pH lock-out. Had the same issue about two weeks ago in a SWC, drained, flushed w/ pH'd water & H2O2 (yes flushed not leached) and refilled w/ fresh nutes carefully measured. End of problem (mine was NOT pH, run-off was fine).