Dry, Yellow leaves

[IrishTiger]

Hi peeps and peepets, ????
So I am quite confused, I'm a decent grower, I think throught some luck and keeping things quite simple so therefore, have not ran into many problems in my experience, but my mum has been taking a verry laid back approach, with me popping in occasionally, pic included, they only get some tomato feed, so can't be nute burn, only thing I can think is they were too hot last week in that heat wave, anyway, any advice or tips would be much appreciated. The one with my hand is is the worst example.
Regards Tigger
P.s. don't judge the set up, she's just having fun, but I'm trying to get the best result for her, ha.

[GEORGE]

Looks to me like you have given her too much food. JMO

[Jingo]

Looks to me like you have given her too much food. JMO

That's what I'd say, too much phosphorus or possibly sulfur. A lot of times a plant can be right on the bleeding edge of what it can take as far as nutrients. Then the weather gets hot and it drinks twice as much and it takes in too many nutrients and gets burned. Sometimes it's a good idea just to go with water during the hot weather or go straight water and then put a little nutrients in afterwards.

My 2020 outdoor grow autos and photos in pots

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