OG#18 2nd week flower problems

It looks like a nutrient deficiency of some kind.

My guess is that the pH is too high and nutrient level is too low.

Take your nutrients up to about 1.4 EC and your pH down to 5.8.

Make sure you're using the full spectrum of nutrients. Also use some superthrive and wormcasting and/or bat guano solution.

Good luck.

Followed the advice of lowering my PH, raising my lights and adding some H2O2 and the problem has seemed to have passed for now thanks guys.

Code10 said:

Followed the advice of lowering my PH, raising my lights and adding some H2O2 and the problem has seemed to have passed for now thanks guys.

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Because it was light bleaching dude... You didnt need no h202 , dutch master or PH adjustment your plant was fine it was just light bleaching I tell ya! OG#18 is crossed with SFV ( San Fernando Valley ) and SFV is a huge stretcher I have grown them both plenty of times and I just light bleached my Super Silver Haze because I added another 1000W HPS...You gotta keep them stretchers at least 18'' - 24'' inches under the 1000W ..Not too many growers encounter any light bleaching thats why they tell you " PH issues ", your plant looked fine to me minus the light bleaching

forgetiwashere said:

i was actually thinking more along the lines of a lockout than a deficiency

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Correct me if I'm wrong, but my understanding is that a lockout IS a deficiency. Just a different method of causing one. A lockout is when the pH or an over-dose of another nutrient causes the plant to be unable to uptake one or more nutrients. So while there is enough of that nutrient in the solution, the plant isn't getting it, which causes a deficiency.

This is one of the things that makes diagnosing plants so challenging (sometimes in a fun way) - that you can read a deficiency in the plant but you have to take into account that it can be caused by lockout rather than simply not having enough of that particular nutrient available.

BeaverHuntr said:

Because it was light bleaching dude... You didnt need no h202 , dutch master or PH adjustment your plant was fine it was just light bleaching I tell ya! OG#18 is crossed with SFV ( San Fernando Valley ) and SFV is a huge stretcher I have grown them both plenty of times and I just light bleached my Super Silver Haze because I added another 1000W HPS...You gotta keep them stretchers at least 18'' - 24'' inches under the 1000W ..Not too many growers encounter any light bleaching thats why they tell you " PH issues ", your plant looked fine to me minus the light bleaching

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This.

There's nothing wrong with the nutes. Especially nowadays you have to pretty much try to screw up the AN nutes before you're going to actually have problems with them.