Has anyone any idea why all my plants in after the...

Yeah the environment temp gets to 33-35c. This does not translate to leaf temp as anything with constant airflow over it, its temp is a lot less. To keep a leaf temp of 30-31c you need high heat in your environment. I have 6 fans. Blowing under at the pots keeping co2 off the ground, 1 at the very top keeping it down. And the rest are blowing on the leafs. Keeping the leaf temp way below. My co2 intake is extreme. So if it was heat or not eating. My co2 wouldn't drop to 300- if I leave them for 30 the co2 level drops from 1300-1500 to 400 So, to m0use I think you're 100% correct on the EC. My environment temp hits that, mainly its at 33 but, that's not leaf temp. I can tell when my plants are in trouble. As co2 intake stops nearly completely. So, I think it's just lack of nutrients and too much water uptake losing pigment and C. I'm just gonna focus more on feeding. I did an EC check on my Slurircane it was 150 ppm my water is 110 ppm. So, there's little to no feed in it. So, I think this is my issue. As these are organic nutrients plagron say don't adjust the PH but, they don't say that about green sensation and so on. I think I made a big mistake using a light mix soil. Promix has little to no EC in it. Lessons learnt. I've a few plants that I'll know if it's lack of nutes in a few weeks. As I'm gonna double their EC and nutrient feeds. As I've no excess nutes signs. Tis new area for me. So, I appreciate all your messages Thanks guys

Desde mi punto de vista creo que la alta temperatura puede afectar. Tienes 35⁰ según su diario. La temperatura alta puede afectar la temperatura de su sustrato produciendo una difícil absorción de nutrientes. Pero pienso que a su planta no le faltan nutrientes. Sólo sus hojas sufren el calor y se queman. Es mi umilde opinión. Mucha suerte

I have read similar things with CO2 basically it pushes your plants into overdrive allowing them to absorb more light and take up more nutrients. so I guess that is probably your issue

Yeah. I just can't seem to dial it in mate. Full co2 grow. I did read that when underwatered even though they might not show it it can lead to pigment loss. And with the increase in photosynthesis with co2 I Think these are side affects. Idk. If anyone has insight would be great.

It's a bit difficult to get a clear answer without much insight into your grow but I think you're right in thinking that you are not feeding enough. Make sure you're giving your plants the nutrients they need in each step. This step is Phosphorus and Potassium P-K

Tis not really related to this diary. But, has slight issues not as bad. The other pics are of my Sour Strawberry, Slurircane and the big one is my lemom haze auto. They all look like shit wth is going on. Is it too much water intake and not enough nutrients? What am I missing. Its not PH related. As this has been following me ever since I started in co2 growing past pre flower.