Problems with Cucumbers

Hi

I have grown Palermo cucumbers from seed and everything has been ok until recently.I repotted the cucumbers when they became too big for their 3 inch pots. they have now developed brown spots on the lower leaves and one plant wilted altogether. I have been careful when watering. I have tried to up load a photo but have not been able to.
Hoping someone can help

 

Thanks for that I have just worked out how to up load a picture which I have included in this reply. I hope that will make things easier to identify my cucumber problem.

Many Thanks

 

Hmmm ... looks like Cucumber Mosaic Virus (which would be really bad :( ) or perhaps Verticillium Wilt (in which case I believe there should be brown streaks inside the plant stems) - I think the plant may be able to grow out of this, my book says to keep the plant at 75F for two weeks - perhaps that kills the infection?

Or I suppose it could be Magnesium deficiency - but I would be surprised you would get that this early, assuming the plant is in shop-bought compost? (Spray with Epsom salts, or a foliar feed containing Magnseium)