1. The tomatoes are in the greenhouse, well fertilized, growing well. Photos attached. 2. Also, two separate ones have just toppled over - is that fungus at the base from being too wet?
The discoloration on the leaves looks like sun scald to me. It can be caused sun, wind and/or drafts (i.e. from an indoor fan set too close to the plants). Also, you may want to use a fertilizer especially made for tomatoes, typically lower in nitrogen. Mold and fungus usually indicate too frequent watering, but I live in dry Colorado and grow tomatoes outdoors, so not qualified to speak to that issue.
