I would get rid of the bad leaves, and even the bottom ones because disease can splash up from the soil. I use foliar nutrient sprays, especially when leaves are curled as that is an indicator of stressed plants. In the eastern US, we had a very cold spring this year, and my tomatoes survived a cold 4° C night- after they got hardened off. Hope your plants do well :)

First pic shows some definite nutrient lacking - likely phosphorous. But if it has been especially cool that can interfere with nutrient uptake even if present in the soil.

Any sign of pests on the underside of the leaves? Aphids and spider mites can create similar damage to that in the pic with the circles drawn around the spots.

The plants don't appear to get much sun down low on the floor like that. Too bad they can't be raised higher up closer to the light.

Dave

For the first pic: well, it is warmer last 2 days and i still do not see that purple going away. It will be warm (+21-25C) for the next week, then they say it will be pretty cold june (18 max during day and 8-14 night). Sucks. Don't know what to do.

Even though they are pretty low at the floor they actually get plenty of sun if weather is sunny. This is southern side so they get sun from early morning till evening. Sun is pretty high now even in the 10 am. I measured light and on sunny day they gen about 15K lumen at 10 am and still get around 10K at 9pm even with indirect light. Direct light is 60-100K for several hours a day. Weather is more trouble than low position. Rains, cloudy and cold. I even thought about adding some led light, but then measure them and see that they create around 5K. Even on very cloudy day they still get 5-6K from sky, so, artificial light is useless unless very powerful, but than it is a lot of electricity and $$$. Now i am thinking about adding some heating for period of cold june. $$$ too.

For the second pic. No, i don not see any pests signs whatsoever. Everything is clean.

I don't think it is aphids or spider mites because there were not spots a week ago and now they all have it. All plants all leaves. Unless a whole colony just landed on my balcony it seems to be unreal.

I found a picture looking very much liek my problem

http://www.clemson.edu/extension/hgic/graphics/2217/Tomato%20leaf%20mold%20upper%20leaf%20surface%20jw%20300.jpg

They write that it is fungus and need to be treated with copper.

Also, lower sick plant now has more problems. Some leaves became yellow and dry and some leaves developed black spots at edges and tear. Seems like it is some kind of infection which progresses pretty fast.

I will try treating them with copper fungicide today. Fungus sounds like a resonable theory because it was way too wet last weeks.

Firstly, I would prune any and all of the sicky looking and yellowing leaves.They serve no purpose other than possibly entry point for disease and spreading it.

Secondly, I would spray with fungicide .

The new growth on your plants look normal now.

Sey

So, i pruned the bad leaves and spayed them with fungicide and added some minerals on friday. Then left until now. Now i see this

What are those yellow sport? The spots are very dry and thin. I don't see any signes of any insects. Spots have no border. Only one rightmost tomato has these spots.

The small yellow spots on deteminate tomatoes are almost gone, color is darker, but two tomatoes have top curled down and leaves on top are almost turning into balls.

Look:

Too much nitrogen? Too little water? I water them 2liters per plant per week.