Results 21 to 30 of 33
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01-24-2011, 10:59 PM #21
Senior Member
Have a look and tell me what you think???
Yes, the ph being out of range can lock-out nutrients, causing the nutrients to be stolen from the fans. (no nutrients, the leaves yellow) Really low ph causes the leaf to curl, looking like a claw.
No, the yellowing of the plant will not alter the ph.
Yes, overwatering can cause the same type of yellowing. If it continues, you'll start to see greyish brown to brown splotches growing on the leaves as those spots die.
My wellwater comes out at 7.9 to 8.0 ph. I use phDown (phosphoric acid) at 1/4 tsp per gallon (4 litres) and it brings me down to 6.7ish. Cannabis in peat-based mediums (if buffered) should have an ingoing ph of 6.3 to 6.8 ph. Go outside that range and lockout starts.
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01-24-2011, 11:40 PM #22
Senior Member
Have a look and tell me what you think???
Did I understand this wrong or what? (if not buffered or runoff)
Originally Posted by Rusty Trichome
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01-25-2011, 12:02 AM #23
OPMember
Have a look and tell me what you think???
You say the ph look low ? so there for i am adding to much ph down witch is makeing my leave and tips to yellow ??,.. and yes there is the odd grey spot on the leaves ,.
Originally Posted by Rusty Trichome
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01-25-2011, 12:37 AM #24
Senior Member
Have a look and tell me what you think???
No, sorry about that. Amber needed the computer...
I was attempting to say that slightly low or slightly high ph (just enough to start causing lockout) can look like overwatering.
If the peat-based medium (potting soil) has no buffers, you either have to add lime or similar to the mix, or raise ingoing water ph. If buffered, usually the ingredients list will include lime, limestone, or limestone dust. At least in the mixes I use.
If you have an accurate ph pen, you can look at your run off ph to make this decision easier. But since he only has the color-coded ph drop test, he can't ph the runoff accurately. (the tinting of the runoff skews results)
Consistently overwatered plants tend to develop root rot. Smells like low tide in Newport Harbor. (yucky) This is a fatal condition if not addressed. Let the roots dry between waterings.
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01-25-2011, 12:46 AM #25
OPMember
Have a look and tell me what you think???
what you think of this one mate ? ph prob u think ? high low?? ,..it doent show to well in tthis pic but under the light it very yellow in the middle, and the tips are very yellow too
Originally Posted by Rusty Trichome
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01-25-2011, 01:22 AM #26
Senior Member
Have a look and tell me what you think???
lol
Originally Posted by GaGrown
:wtf::thumbsup:

:stoned:
:wtf::jointsmile:
:stoned:
:wtf:
:thumbsup:


he said ...virtue.
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01-25-2011, 02:39 AM #27
Senior Member
Have a look and tell me what you think???
^Literally ROFL'ing...
ALL THE EMOTES lol
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01-25-2011, 01:22 PM #28
Senior Member
Have a look and tell me what you think???
I'd get a handle on figuring-out a good watering schedule before messing with the ph too much more. But I'd keep all ingoing water twords the higher end of the acceptable ph range. I'd work on the watering/feeding thing first though. Never cut-out feeding days, but watering days should remain flexible.
The spots I can see (that's one tiny picture) look like they could be man-made. Did you squish the leaf between your thumb and the pot at some point? (when picking it up, for instance) Could be leaftip irritation from the plant next to it rubbing back-n-forth across the surface, too. (if applicable)
The first 1/8" of leaftip I volunteer to the leaftip gods, as it turning brown or yellow is rarely a sign of anything worrysome. If the neckrosis goes up any further than that, then worry.
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01-25-2011, 03:24 PM #29
OPMember
Have a look and tell me what you think???
wateringand feeding ??? ,... do you do them separatley??????
Originally Posted by Rusty Trichome
Hi yes come to think of it i think i rubbed a grey spot off the leaf , oh i didnt know you could touch them in that way?? me bad ,.. ill try and sort the pic's out , but for some reason its only letting me do 1 pic at a time , let me see what i can do !!
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01-25-2011, 05:28 PM #30
OPMember
Have a look and tell me what you think???
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