What's wrong

[Pauldtx]

What's causing this can anyone help with this please

 

[golfnrl]

There are multiple reasons for leaves that look like that. What are the grow details? Grow medium? Hydro, coco, dirt? PH? Nutrient menu and feed schedule? Light? How close to the plant? What intensity? How hot does the grow environment get? What stage of growth? Veg or flower? Indoors or out?

 

[Pauldtx]

Hi it's in biobizz all mix soil nutes are all biobizz grow bloom Top max and heaven the pH is around 6 to 6.4 humidity is around 45% I only feed it when it's dry 1 inch under the surface

 

[Pauldtx]

Also that leaf from the post was 1 from the bottom of the plant

 

[golfnrl]

OK. That makes sense. How hot is your environment? Is the leaf from the same plant as in the pic? Looks like it has nutrient burn to me. That light looks really close to the plant. Might be OK but what brand of light are you using and how high above the plant? No burnt tips at the points closest to the lamp?

 

[Pauldtx]

Temperature ranges 20c to 29c at the moment it's at 31.9 because it's hot day I've got a co2 bag in there. Yea the leaf is from same plant. Them are the 2 tallest

 

[golfnrl]

the 29-31 is pushing it a little bit but with good ventilation should be OK. When the temps rise the plants will drink more. More water means more nutrients. Problems would likely start to show up at the bottom of your plants. Good lookin buds in those last two pics. BTW how much growing experience do you have? I'm not a horticulture expert, but I don't want to insult your intelligence.

 

[Pauldtx]

Non this is my first she's a slow drinker I last fed her 5 litres last week and the soil is still quite damp another day or 2 before she's needing more

 

[golfnrl]

If this leaf is the only issue you're doing it right. Auto or photo fem? How old is the plant? I see the vent fans in your tent. Do you use an exhaust fan and carbon filter?

 

[Pauldtx]

Yea it's a glue gelato auto 77 days old should be done in 77 days I think there another 4 weeks in her yet

 

[Pauldtx]

Yea I've only got a cheap carbon filter with built in fan I'm waiting for AC infinity fan and filter and controller to come through the post

 

[golfnrl]

An auto. OK. If the grow guide says the plant will mature/flower in 77 days you're right to be skeptical. It's just a guide. Even with an auto watching the plant as it develops trichomes is the only sure way to tell if it is ready for harvest. And even then it is subject to each grower's interpretation of what they are seeing. Harvest when the majority of pistils have curled in and turned orange/brown and the trichomes are cloudy with a little bit of amber. I use a jewelers loupe, cheap, easy and provides a good view of the trichs. The pistils are an indicator the trichs are the real guide.

 

[Pauldtx]

Also when I last fed her the run of was 2200 ppm
I'm thinking off today to flush her with just phone water would that be a good idea

 

[golfnrl]

The exhaust fan will help with the heat. If your tent is in a lung room you can also use that to help control temps inside the tent. My lung room is a spare bedroom. The difference in temps is 6 degrees. I use the AC/heat in the lung room to help control the temps inside the tent. That also helps with RH. Your RH at 45% is good for this stage of the plant. Try to maintain that and don't let it creep too high as high RH in flower can easily lead to bud rot.

 

[Rwise]

What is "phone water"?

 

[Pauldtx]

Supposed to say pH water

 

[Allenpro]

I am betting that is spell check for PH water

 

[Rwise]

I just wanted clarity.