Do YOU know what this is? Pics included.

Freda Felcher

Freda Felcher

Well-Known Member
Hello! I put this plant into flower about three weeks ago. It started showing small rust colored spots a few days ago and now i am seeing more. Plus the leaves are drying up and dying. Anyone know what this may be? I have been searching the plant problems section of the faq, but I still cant narrow it down.

I'll give you a short rundown on my grow. They are growing under a 6oow hps, in 2 gallon pots with Fox Farm Happy Frog soil. I am using GH nutes for now, plan on switching to fox farm at some point. I keep my nute pH around 6.5 to 7 and try and keep an eye on the ppm as well. Humidity is usually around 30 to 40% and temps stay around 75 F in the 3x3 tent. here are a few pics
 

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statik

statik

Well-Known Member
Thats calcium def, pretty sure of it. Mainly the first pic. The other pics look like its just progressed more. Kind of odd that its near the veins like that though. Almost looks like phos def's. Can see how that would be kind of confusing.

EDIT:

You should always get a second opinion though. I am not exactly an expert, but I know enough to get by. ;)
 
T

TheOtherGreenBud

Member
hmmm idk ive had this same issue before with a few plants plenty of nutes in them, i always just thought it was the plants taking back some leaves to make buds but ehh another opinion owuld help
 
xTOXICxLOLLIPOPx

xTOXICxLOLLIPOPx

Member
It could be the type of water your using? When I switched the type of water I was using there was a big difference... no more spots the second time around.
 
Freda Felcher

Freda Felcher

Well-Known Member
I just tested the ph of the soil. I made sure to adjust the RO water to a pH of 7 and then tested what drained from the pot. It was 5.6, that is way too low for soil! So obviously I may have some nute lock out occuring. How do I go about raising my soil pH back to around 7?
 
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vhsmopnglo

Member
How do I go about raising my soil pH back to around 7?[/QUOTE said:
I'm a pretty newbish grower, but it sounds like you would need to take the pH of all water/nutes you feed the plant and keep measuring the runoff... If it was my plant, I would stick with distilled water to be on the safe side.....
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Freda Felcher

Freda Felcher

Well-Known Member
I use Reverse Osmosis water that I adjust to 7pH or a little under, it's a lot better than distilled and about the same price. The plant I am having the problem with is from different seed than the rest of my plants I have growing. I have all AK-47 plants except for this one, this plant is from a bag of some sick shit I had months ago. Kind of an expirament, just happy it was female and would love to finish her out. I took a few clones before putting her in flower, in case she's a keeper. She seems more indica from her looks and from the buzz i had from the bag the seed it came from.
 
Freda Felcher

Freda Felcher

Well-Known Member
TheOtherGreenBud said:
Eek i never liked RO water, has absoultley nothing in it lol
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That is the whole point of Reverse Osmosis...you want as little sediment, mineral and other unwanted particles in the water you use for your nutes. RO takes almost all of those out. Your distilled water still has a bunch of unwanted solid particles that do not benefit anything but up the parts per million.
TheOtherGreenBud...I'm looking for answers from experienced growers. Save your posts for the beginners section dude...


DOES ANYONE HAVE ANYTHING KNOWLEDGABLE TO ADD?! THANKS!!
 
Freda Felcher

Freda Felcher

Well-Known Member
At this point I'm thinking a calcium defiancy and the soil pH is too low. How do i go about raising the pH? I'm sure I need to get the pH in check before adding any cal-mag. Any thoughts?
 
statik

statik

Well-Known Member
Yeah, grab some Reverse Osmosis water, regardless of the fact it has nothing in it. Then get some PH up and PH down. Add some pH up to your water (try like 7.5) and then water your buckets with that. Test your run off, and keep putting water through (dont flood the pot, water slowly) until the run off is reading around 6.5.

If that doesnt fix it, then add some CalMag the next time you have to water.

EDIT:

Veg or flower? I forgot. If in veg, you can foliar feed some 1/4 strength (or less) calmag in the mean time to slow that crap down.
 
connorbrown

connorbrown

Well-Known Member
Maybe it has herpes. Does anyone you know have herpes and is turned on by marijuana plants? Especially female marijuana plants.
 
Freda Felcher

Freda Felcher

Well-Known Member
statik said:
Yeah, grab some Reverse Osmosis water, regardless of the fact it has nothing in it. Then get some PH up and PH down. Add some pH up to your water (try like 7.5) and then water your buckets with that. Test your run off, and keep putting water through (dont flood the pot, water slowly) until the run off is reading around 6.5.

If that doesnt fix it, then add some CalMag the next time you have to water.

EDIT:

Veg or flower? I forgot. If in veg, you can foliar feed some 1/4 strength (or less) calmag in the mean time to slow that crap down.
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Thanks for all of the help! I will try what you said and wait a day or two before adding cal-mag to see if the pH change makes a difference.
 
DTR

DTR

Active Member
i had a faulty ph pen cause some problems but im a new grower so probably not your issue just thought id throw it out there
 
Freda Felcher

Freda Felcher

Well-Known Member
My RO water usually starts out at a pH around 9.5. When I add all the nutes it brings it down to between 6 and 7. Is RO water normally that high or does it depend on the water source? Or is the store I get it from selling me bunk water, lol? How would i go about checking to see if my pH meter is giving me a good reading?
 
A

agnostic

Active Member
if your buying your water chances are its not RO, if anything its been put through a "brita" type filter which doesnt take out any totaly dissolved solids. I wouldnt wait to add the calmag either. calcium is the compound in dolomite lime that acts as a ph buffer and stabalizer, adding that should help raise your soil ph. adding a couple tablespoons of dolomite lime when you mix your soil can help buffer your ph and provide calcium and magnesium.
 
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