Hi, I know this is a hot pepper forum but have never found one for cucumbers (cucurbits) and all of you here have been so helpful. Could you either show me where I could post this question or help with what could be wrong?

*Greenhouse English Cucumbers. All Female blossoms. *Started March 2012.
*Planted in 3 year old mushroom manure and both years the plants were bright green and happy.
*Mixed in some general compost before planting
*Fertilized 5 days ago with something similar to GeneralHydroponics Flora Gro using the same feeding schedule as recommended (probably weaker than recommended actually). I did this as I thought they lacked nitrogen as were yellowing but now they are very bad. (used same product last year with no issues) http://generalhydroponics.com/site/gh/docs/prod_labels/floragro.pdf

Only my mini cucumbers are showing this yet all were fertilized and planted in the same tray. The plants fruits are set without pollination and they are turning yellow. I have been cutting them off. I know hydroponic fertalizer is not ideal in soil but the last few years it had worked wonders for all my plants.