What have I got?

[spidergawd]

Strange brown spots. sorry my picture taking hasn't improved.







I've looked with a 30x21mm eyeglass, but dont see anything on the leaves only the damage.

Probably sloppy hygene ? I didn't burn a pyrethrum bomb before this planting. These leaves belong to a pandora auto at 21 days, I have now, 4 days ago, pushed some bug spikes into the soil.

Or could my ventilation be at fault, is it dampness ?

Thanks for any help on this .

[obligon]

Too many supplements added to the soil, i.e. fertilisers, which have affected the ph balance of the soil is my best guess.

[spidergawd]

Cheers, but I haven't given them anything up to when that appeared about a week ago, they're just in ordinary potting compost mixed with some of those granules that retain the moisture.

[obligon]

then i have no idea - is the soil the right ph?

[spidergawd]

Maybe not, I will have to get a soil tester, it's what I've used before though with no probs. I'm wondering if it's too damp in my box though, anyway thanks for your thoughts I will do some research. Tomorrow

[treetop]

Hi Spider. I have a couple of ideas what that might be in the pic but you'd probably be better off having a look at this...

http://www.icmag.com/ic/showthread.php?t=11688

My guesses would be either cal/mag def although surely too early in the process for this to be showing or a problem with your reflective surfaces in your cab causing heat spots. I saw a grow with plenty of these recently and they looked similar.

Finally some kind of pest possibly. You might want to use a 60-100x microscope to check the leaves with the spots for anything that should not be there.

Hope this helps and good luck with your grow.

[spidergawd]

Thanks for the link, I'm going to have a good read through that later .

[gixxer]

is these spots on the large fan leaves at the top of the plant ????
if so and the bottom leaves are ok,, id say its a lack of calcium
it would help if you could post a pic of the full plant
hope this helps SG

[spidergawd]

Gixxer wrote

s these spots on the large fan leaves at the top of the plant ????

They seems to be following the fan leaves as they develop.











The inside of my box is painted flat white treetops so no reflection problems

I can't help thinking that it has something to do with damp, It's been very wet and cold so my fan has been bringing in the outside air and because I'm stupid and am still using the LED I have to have a heater to keep the temperature up in the 20's. NO MORE though, I've just ordered a new 400w HPS and this plant and some seedlings are going outside now and I will start some fresh seeds, after I've fumigated the box.

LED's. (well the cheaper ones anyway) are good for vegging but I've taken 2 plants through to harvest and they just dont produce. .

Happy trails