trouble shooting advice???

[LEPRECHAUNvi]

Thanks for reading.


i have leaves turning yellow rapidly and falling off. im in the 4th week of flowering and ive never had this problem before. And on all the leaves the tips are turning up and are brown n crispy. Ive flushed it thinking it was nute lock and the problem is geting worse. Any help would be great.



THANKS

LEPRECHAUNvi Reviewed by LEPRECHAUNvi on 12-11-2010. trouble shooting advice??? Thanks for reading. i have leaves turning yellow rapidly and falling off. im in the 4th week of flowering and ive never had this problem before. And on all the leaves the tips are turning up and are brown n crispy. Ive flushed it thinking it was nute lock and the problem is geting worse. Any help would be great. THANKS Rating: 5

[MadSativa]

do you have pics? also sounds like nute burn, what is the ph of water and nutes in and what is the ph of the run off? if they are differant than 6.0 then that might be the problem, also what is the strain, if it is a auto flower then 4 weeks of veg and 4 weeks of bloom it might be natual for leafs to do this, it would be at the end of its life, the only next thing would be having some balls drop to final polinate.

[LEPRECHAUNvi]

Thanks, ive just moved from florida to ny. and dont have all my equipment, such as ph tester. i have the strips and the ph seems to be a lil below 7 for the runoff. Im EFEN clueless. Thank you for your imput.


LEPRECHAUN

[GreenThumbDoc]

Indeed it can be natural during the flowering state. The plant is using all its store food from the leaves to produce the buds. So it starts taking the nitrogen, first from the bottom leaves to feed itself. Pictures would definately be helpful. The pH strips are a pain to use. My advice, if you dont have a digital pH tester is goto a petshop and buy a water pH tester for fish aquariums. They give you a small vial and drops to put in the water. That will give me a bit more accurate reading. If your pH is 7, it is definately on the higher end and can cause nute lock. The preferred pH range for marijuana is 6.3 to 6.8 with 6.5 being ideal.

GTD