Any ideas?

This is a 4 to 5 week old Skunk Passion plant. It has been fed and watered reasonably regularly. It is under a 250 watt blue cfl and 6 20 watt red cfls. Any idea what the problem with the yellowing leaves with blackish-brown spots?

hows your ph

or temps

the ph i have to check. the temp is fine, warm but you could sit comfortably beside the plants and not be too warm.

I thought it looked like a pottasium deficiancy but i have given it enough nutes i think so it should be grand.

the pot is too small which is making correct dosing of nutes and ph critical, you prolly need to flush it every two weeks in a pot that small.

I was gonna repot it soon anyway so I'll flush it and do that tomorrow

so more then likely the ph then?

pH is always the place to start....it locks out so much........here is a chart Al B posted already..........if pH is stable, then look at K and Mg, I think.....possibly too much Ca (they look like later stages of a CA tox problem I had). I dunno...just my 2centavos

what would be the problem and cause of slow grow bud?

root problems??

Your pot is too small the plant is very likely root bound. Transplant it to a larger pot and you should see some improvement. Are you using any nutes?

i add 2ml bio sevia grow to every 1L of feeding water as it says. They get feed usually once a week and watered two more times each week as well. Unless they are drying out faster.

its been repotted from the pot it was in (6inch pot) to an 8inch pot. This has almost triple the volume(roughly?) Will this be big enough?

bobthefish442 said:

its been repotted from the pot it was in (6inch pot) to an 8inch pot. This has almost triple the volume(roughly?) Will this be big enough?

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Should be, what is the nitrogen content of the nutes you are using? Keep us updated.

the n-p-k rating is 3 1 6

Heres the breakdown of nutrients acccording to the bottle if it helps:

Total nitrogen: 3.93%

• nitrate nitrogen:.03%
• ammoniacal nitrogen: .9%
• organic nitrogen: 3%

Available phosphate (P2O5): 1.95%
Sulphates (SO4): 5%
Soluble potassium (K2O): 6%
Magnesium(Mg): 1.5%
Iron(Fe): 1100 ppm
Copper(Cu): 150 ppm
Zinc(Zn): 130 ppm
Boron(B): 150 ppm
Manganese(Mn): 450 ppm

I've flushed the soil with 3 to 4 times more water then the pots volume yesterday. The leaves that were damaged look a little worse (browning and curling at the edges) but it isn't spreading through the plant. Don't have a camera today so hopefully i can give a picture update tomorrow. If anyone has any other ideas please tell me

bobthefish442 said:

I've flushed the soil with 3 to 4 times more water then the pots volume yesterday. The leaves that were damaged look a little worse (browning and curling at the edges) but it isn't spreading through the plant. Don't have a camera today so hopefully i can give a picture update tomorrow. If anyone has any other ideas please tell me

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Stop flushing, your plant needs time to recover from the transplanting, the whole point was to reduce soil compaction and increase root ball aeration along with allowing room for the root mass to grow. By flushing you are compacting the soil, drowning the roots and further stressing your plant. Let the pot dry out a bit and feed a mild nutrient solution next time you water.

Woops... I did leave a day or two between flushing and repotting. That honestly didn't even dawn on me. I'll remember that in future. Thanks. I'll post up pics in a day or two to see how they're going

the n-p-k rating is 3 1 6

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you need more N for vegging, the N should be the biggest number during veg.

i got it in the local grow shop. Never really checked the exact content before. Thanks for that, I'll look into some Nitrogen booster

could be a list of things pal.... ph? grey mould? or N deficiancy