Take A Look At The Leaf; What's Wrong? - GreenPassion.org - Dedicated to Medicinal Cannabis Cultivation and Education

purpleshadrach · #1 (**permalink**) 10-30-2008, 11:53 AM

I submitted these leaf pictures for all to comment.

This is a new set seedlings, moreover, they grew at a break neck pace. Within two weeks I began to see the leaves change color.

I do not foliar feed the plants, nor do I give them fertilizer. The plants are 18 days old.

The soil mix is simple; Super Soil, Worm Castings, Peralite, Bone Meal, Epsom Salts.

When the cups start getting light I water them.

The leaves reach for the light and seem healthy. I pruned them the other day and the new growth is already coming in.

The water spots that you see on the leaves are from when I spray them with (water only) in the morning.

ileso · #2 (**permalink**) 10-30-2008, 03:13 PM

first of all what is that dry whitish residue on the leaves?
the last photo is absolutely normal that that particular leaf shrivels up and dies soon after vegging sets in in earnest, dont worry, as for the yellowing of the others i couldnt really say... tell us how youve been treating her and what u feed her. that way some of our inhouse plant doctors can give you a full diagnosis

peace
ileso

jangel · #3 (**permalink**) 10-30-2008, 04:06 PM

First off, plants should not be sprayed with any thing if they are under lights. This causes damage to the leaves. The light focuses on the moisture and causes burn spots. You also do not say what kind of light you are using and also, what are your temps like? What kind of water are you using and what is the ph of the water you are using? It looks like it could be a ph problem with the colour of your leaves. Pot needs water with a ph of 6.8 or close to it. Either rain water, from a dehumidifier, or osomosis water. Even some spring water is okay. Tap water in cities usually also has chlorine and floride added to it. It usually has to sit for at least 24 hrs for this to evaporate. So check your water first off.

If you give us the rest of the info we can help you.

Never heard of Supersoil, please explain.

It is natural for the first coloidal leaves or water leaves to fall off. This tells you the plant is ready for feeding. Prior to this seedlings do not need anything added to the soil, so your soil mix could be too rich for that little baby.

Give us more info and we can help more. Hope this helps you,

peace

purpleshadrach · #4 (**permalink**) 10-30-2008, 04:29 PM

The plants are under fluorescent lights, approx. 4" from the lights. I sprayed the plants with tap water; consequently, this probably accounts for the water spots. I will have to find away to allow the water to sit out before watering any of my plants. The pH of the tap water is 7.0.

I Do Not spray the plants when direct sunlight is on them, for this could burn the leaves.

The lighting inside is low temp fluorescent; 6500k.

Super Soil
[IMG]file:///C:/DOCUME%7E1/NOTARY%7E1/LOCALS%7E1/Temp/moz-screenshot.jpg[/IMG][IMG]file:///C:/DOCUME%7E1/NOTARY%7E1/LOCALS%7E1/Temp/moz-screenshot-1.jpg[/IMG]

jonnyappleweed · #5 (**permalink**) 10-30-2008, 05:12 PM

Quote:

Originally Posted by purpleshadrach

The plants are under fluorescent lights, approx. 4" from the lights. I sprayed the plants with tap water; consequently, this probably accounts for the water spots. I will have to find away to allow the water to sit out before watering any of my plants. The pH of the tap water is 7.0.

I Do Not spray the plants when direct sunlight is on them, for this could burn the leaves.

The lighting inside is low temp fluorescent; 6500k.

Super Soil
[IMG]file:///C:/DOCUME%7E1/NOTARY%7E1/LOCALS%7E1/Temp/moz-screenshot.jpg[/IMG][IMG]file:///C:/DOCUME%7E1/NOTARY%7E1/LOCALS%7E1/Temp/moz-screenshot-1.jpg[/IMG]

We can't read the soil label,does it have a continual feed for 2-3 months on it???
Move the light to 8"-10" above(it's ok for them to stretch a little the first couple weeks)
When I'm cloning I keep my pan light 12" above the clones
It only takes 1-2 tlbs per gal of planter of bone meal per plant(and thats better done after rooting)
I just went through something like this myself,and I ruined 2 months worth of cloning, and had to start over...
I found that a simple soil/perlite mixture along with by-weekly feedings works real well,I do foliar feed twice a week also with 1/2 strength food,and spray twice daily with Co2 water...
Hope this helps some...

Peace

jangel · #6 (**permalink**) 10-30-2008, 05:23 PM

Quote:

Originally Posted by purpleshadrach

The plants are under fluorescent lights, approx. 4" from the lights. I sprayed the plants with tap water; consequently, this probably accounts for the water spots. I will have to find away to allow the water to sit out before watering any of my plants. The pH of the tap water is 7.0.

I Do Not spray the plants when direct sunlight is on them, for this could burn the leaves.

The lighting inside is low temp fluorescent; 6500k.

Super Soil
[IMG]file:///C:/DOCUME%7E1/NOTARY%7E1/LOCALS%7E1/Temp/moz-screenshot.jpg[/IMG][IMG]file:///C:/DOCUME%7E1/NOTARY%7E1/LOCALS%7E1/Temp/moz-screenshot-1.jpg[/IMG]

I still am not sure of what type of light you have. From what you are saying it could be CFL's, Compact florescent lights, with that number of lumens it makes me think you are using the correct ones. Quite often with cfl's you can use 3/4 of one type, the veg ones you have with 6500k lumens and one quarter of the other type for flowering, which is 2700k lumens. OR you are using t-5's with that number. I veg my plants under t-5's.

Please also show the whole plant. If it is just the bottom leaf that is dieing and only one, it is fine I would say. Please add a picture of the whole plant. The ph is a bit high. Take a look at the link in my signature, My Little Grow and you will see that many of my plants at first looked just like yours until I started to us RO water. This corrected the ph problem I had. It also sounds like you are also veging your plants under natural light. Please make sure if you are putting your plants outside you are also not bringing in bugs.

Peace

purpleshadrach · #7 (**permalink**) 10-31-2008, 12:50 PM

Quote:

Originally Posted by jangel

I still am not sure of what type of light you have. From what you are saying it could be CFL's, Compact florescent lights, with that number of lumens it makes me think you are using the correct ones. Quite often with cfl's you can use 3/4 of one type, the veg ones you have with 6500k lumens and one quarter of the other type for flowering, which is 2700k lumens. OR you are using t-5's with that number. I veg my plants under t-5's.

Please also show the whole plant. If it is just the bottom leaf that is dieing and only one, it is fine I would say. Please add a picture of the whole plant. The ph is a bit high. Take a look at the link in my signature, My Little Grow and you will see that many of my plants at first looked just like yours until I started to us RO water. This corrected the ph problem I had. It also sounds like you are also veging your plants under natural light. Please make sure if you are putting your plants outside you are also not bringing in bugs.

Peace

Thanks for the input. I determined that the soil mix was to dense; consequently, the soil became water logged and compact. There was a very small amount of algae at the bottom of the cup.

The Worm Castings most likely made the mix to rich. I believe it was 10:1 Soil / Worm Castings.

I transplanted all plants into new soil mix last night. The soil mix consisted of Super Soil, and Peralite. The Peralite should allow water to drain better.

I have two standard double fluorescent 4ft. fixtures with 6500k lumen bulbs.

The following pictures were taken this morning; all plants o.k after transplant. Although the plants may suffer a minor set back; I believe that the overall plant health will be better.

jangel · #8 (**permalink**) 10-31-2008, 02:52 PM

You do have drainage holes in those cups I hope? And you should still ph test your water.....Are the lights t-8 size flourescents? I also veg under those and have 3 over my clones and bonsai. I also have one for side light with my t-5's. They can get pretty close to those, they are pretty cool in temperature.

They look like they will be fine. Good luck and keep us posted on how they are doing.

Peace

Plie · #9 (**permalink**) 10-31-2008, 06:52 PM

Check it out against these:

purpleshadrach · #10 (**permalink**) 10-31-2008, 08:58 PM

Quote:

Originally Posted by jangel

You do have drainage holes in those cups I hope? And you should still ph test your water.....Are the lights t-8 size flourescents? I also veg under those and have 3 over my clones and bonsai. I also have one for side light with my t-5's. They can get pretty close to those, they are pretty cool in temperature.

They look like they will be fine. Good luck and keep us posted on how they are doing.

Peace

The lights are T-8 fluorescent, and the party cups all have drainage holes in the bottom. I veg under a 400w MH @ 18" above, and I use a good fan.

The Super Soil that I use has a 90 day window were you do not have to fertilize the plants.

All looks good since the soil change, and I believe we collectively came up with a solution.

Thanks,

-Purpleshadrach-

prophetofzion · #11 (**permalink**) 12-09-2008, 12:36 PM

well you shouldnt spray it under the light cuz it will burn and what not and we dont want that.

Gonetripping · #12 (**permalink**) 12-09-2008, 12:50 PM

Quote:

Originally Posted by Plie

Check it out against these:

For what it's worth - these links didn't work for me.

Also - I once lent a friend some equipment for a grow ... once - early on, when adjusting the PH of the water, they accidentially used the PH 7.0 calibration fluid instead of the PH Up. The result was crystalization on the leaves throughout the entire grow. Even with a flush a week later, 2 months after the event, new growth would show crystalization. To see it was neat - but I'm sure it wasn't a good thing. New growth would not show it immediately, but once the leaves got bigger, the crystals would appear (looked like ice). Not sure that's the case here, but wondering if it's possible that the tap water had something in it that caused similar results.

DieAbetic · #13 (**permalink**) 12-09-2008, 12:59 PM

Heres a link to what SHAMAN uses: This is what I use for Nutrient Disorder

OG KUSHMAN · #14 (**permalink**) 12-09-2008, 08:27 PM

For your water add pond water detoxifier. It removes the chlorine, chlorimines, heavy metals and anything else that would kill fish. Works great if you have to use tap water.

ileso · #15 (**permalink**) 12-09-2008, 08:54 PM

you could be right, im growing at around a 7 PH and notice some cristalization on the leaves also, though not enought to call it ice... maybe its a PH thing?

Gonetripping · #16 (**permalink**) 12-10-2008, 08:34 AM

Quote:

Originally Posted by ileso

you could be right, im growing at around a 7 PH and notice some cristalization on the leaves also, though not enought to call it ice... maybe its a PH thing?

*grin* I should have been clearer - the entire leaf was not covered in 'ice' ... it was spotty ... kinda like when ice is first forming on a window - but in small spots on the leaf, some larger than others. Appeared on all leaves once they got big enough.

Please note though - this was a clear mistake ... the guy used 7.0 calibration fluid (used to calibrate a PH meter) ... instead of using PH Up to adjust the ph in the water. For what it's worth ... the calibration fluid did bring the water he was watering the plants with to 7.0 (down from 7.4/7.5)