Picture posting is enabled for all :)
whether it is better to leave lots of ventilation so it doesnt get too hot and humid?
but a couple of these are starting to go yellow round the edges of the bottom leaves, which I assume is blight (they have been well fed)
That's scare-mongering, Robert. To say that is to state that every allotment will be blighted by a single infection. Not so. Even where allotments back on to each other, it's not a certainty that they will all be infected. (Quite likely if close to each other, but not a certainty.)
Am feeding with Miracle Gro organic plant food. No clue what is in it but it smells good enough to eat!Both plants went straight in the ground a couple of weeks ago (forgot the hardening off bit..) and they did sulk for a couple of days but perked up again quickly.
How deep are the pots.