Posted: 04/08/2015 at 07:35
EC, fret not, they look like lovely, healthy plants. You've got some minor fungal disease - those spots and patches - so just nip off those affected leaves and destroy them. As Dove says, spraying against fungal problems has to be preventive. Once fungal spores have settled on foliage, they're pretty much impervious.
Are all those stakes supporting the foliage of one plant or do you have more than one plant per pot? It's hard to see clearly. Either way, it looks very cluttered with foliage which works against good air circulation. Air circulation is the best natural aid against fungal disease, it keeps the fungal spores on the move. If you do have more than one plant to a pot, keep it to one per pot next season. Give them space.
I'd take off some of the lower foliage for starters. It's good to keep at least 12" of clear space between the lowest foliage and the soil. Fungal spores fall from the foliage to the soil beneath and can be splashed back up onto the foliage when watering.
Apart from that, you can be proud of your first time growing from seed!
Baz, Dove is right yet again. Never wet the foliage, particularly at night when there's no sun to dry them. Damp foliage is heaven for fungal spores.
As a rule of thumb, if you see things that bother you on the plant during the warmth of the day, wait till after dark when it's cooler and have another look. Plants react spontaneously to stimuli like heat but relax again later. This is particularly true of drooping foliage. Foliage can droop on a warm day but that doesn't necessarily mean the plant is short of water. It's a common misinterpretation. Wait till after dark. If the foliage has perked up again, no need to water. If the foliage is still drooping, water. It's always best to monitor the plant's needs rather than - eg, water by rote.