sick plants, please help

Hi everyone, first thanks for taking the time to look and if possible help, first some info about my grow but if you need more just ask, I must also point out that I am a novice and this is only my second grow, first were autos and these are normal femenised

I have just finished my 5th week of flower, im using canna terra professional soil, 600w hps, temps approx 80f, humidity is around 45 lights on and about 60 lights out, using canna flores, canna cannazym, canna boost, liquid silicon (ph up) and im just starting to use canna pk 13/14, I have hard tap water (very hard 0.7+ ec and 300+ ppm)

I gave all plants a flush last monday (just after the problem started) with aprox 16 litres each of just plain tap water to give them a good flush and then 2 litres of food as normal, the plants are all showing this in farious stages, 1 plant is very very bad, another is getting much worse and the other 2 are starting to get this

I have attached some pics of various stages of this problem, my first guess is that it is mg deff and/or phosphorus def, anyway I would appriciate your thoughts on this please and if possible solutions to fix it

thanks in advance for your help, and again if you need any more info please just ask

anyone got any ideas what the problem is?

I find this shit funny, a person takes all these extreme measures to get the right Ph, temps, soil, blah blah blah and their fucking plants drop over dead. I use a few 1 gallon milk jugs, some MG moisture control, and i water with some tap water i never Ph test and my shit never dies or gets sick.

I honestly have no idea why your plant is dieing tho, the last pic shows some decent looking females. just ride it out i think your plants will be fine. i have read that fan leaves fall off when a plant is almost finished. ( could this be the case ? )

https://www.rollitup.org/marijuana-plant-problems/38772-guide-diagnosing-plant-problems.html

Already smoked so here's a link to check.

Looks to me like sulfur and/or iron deficiency/lockout. Try foliar feeding with a chemical fertilizer to help restore some of that iron for now. If it is iron it's likely a ph issue. Maybe recalibrate your ph meter if you can. But yeah that looks like sulfur or iron to me m8.

Burnt plants and they are well cooked. Flush like crazy, no nutes for 2 weeks and then reduce dosage by 25%.

bbunlock said:

Hi everyone, first thanks for taking the time to look and if possible help, first some info about my grow but if you need more just ask, I must also point out that I am a novice and this is only my second grow, first were autos and these are normal femenised

I have just finished my 5th week of flower, im using canna terra professional soil, 600w hps, temps approx 80f, humidity is around 45 lights on and about 60 lights out, using canna flores, canna cannazym, canna boost, liquid silicon (ph up) and im

just starting to use canna pk 13/14

Click to expand...

, I have hard tap water (very hard 0.7+ ec and 300+ ppm)

I gave all plants a flush last monday (just after the problem started) with aprox 16 litres each of just plain tap water to give them a good flush and then 2 litres of food as normal, the plants are all showing this in farious stages, 1 plant is very very bad, another is getting much worse and the other 2 are starting to get this

I have attached some pics of various stages of this problem, my first guess is that it is mg deff and/or phosphorus def, anyway I would appriciate your thoughts on this please and if possible solutions to fix it

thanks in advance for your help, and again if you need any more info please just ask

View attachment 1771561

View attachment 1771562

View attachment 1771563

Click to expand...

And this is what did it.