Sick looking plants, yellow curling leaves and spots

[Watweed_2009]

Hi guys im using
1200 watt led x4
Grow room is 2m by 4m
14 auto banana blaze from Dutch passion
Seed went straight into 16l rhyzo fabric pots.
Always ph water to 6.5
All germinated well
I used biobizz tropic mix 60/40 Peat coco
Biobizz grow, heaven, algamic, root juice
They are 6 weeks in now and looking like flowering soon. Had the lights at 24 inches pretty much the entire time give or take for trial reasons.
Was feeding them everyday about a L of water per plant added nutrients at week 2.5
1ml of each in 14 ish litres of water.
They were going well and I think I got spider mite I treated them with cannacure and it seems they have gone. But the leaves etc are all looking wrong now. Any ideas as the soil contains enough mag for 9 months it says so I added cal mag once at start and never again after I found that out. The pics are the best j can get as I can't move them easily. My feed schedule I got off here. Been using that since week 2.5 please help lol its my first grow ever x

 

[GoodSmoke]

Coco looks dry, possibly need to water more often.

 

[Watweed_2009]

I've watered loads mate. I haven't added bloom nutes yet so I'm wondering if it's a potassium/phosphorous deficiency.

 

[Cannagus]

I also noted your medium looked dry with some leaves drooping, and also that it was wet at the base of the plant as if you had just watered. If that is how you've been watering, you might try wetting the whole pot slowly from the edge in, until it begins to weep a bit from the bottom. I can't make a recommendation on what to give it re those spots, having no experience with autos which are less forgiving, but I agree it's maybe an early sign of P or K deficiency. I have a few leaves here and there that look just like that and came up with the same diagnosis, haven't done anything with it yet I've had them on plain water while working through other health issues and in mine this condition that looks like yours has not gotten any worse in fact may have improved some after I started watering as I described to you, per the reliable advice of AFN residents. I have them straightened out well enough to feed them for the first time today. Good luck

 

[Watweed_2009]

I also noted your medium looked dry with some leaves drooping, and also that it was wet at the base of the plant as if you had just watered. If that is how you've been watering, you might try wetting the whole pot slowly from the edge in, until it begins to weep a bit from the bottom. I can't make a recommendation on what to give it re those spots, having no experience with autos which are less forgiving, but I agree it's maybe an early sign of P or K deficiency. I have a few leaves here and there that look just like that and came up with the same diagnosis, haven't done anything with it yet I've had them on plain water while working through other health issues and in mine this condition that looks like yours has not gotten any worse in fact may have improved some after I started watering as I described to you, per the reliable advice of AFN residents. I have them straightened out well enough to feed them for the first time today. Good luck

Cheers mate. I'm going to hit them shortly with bloom and top max in with normal feed schedule. They are a little light the pots so I recon they can take it. And then I'm just going to monitor them. Hopefully it is p and k deficiency.

 

[Bill.de.Cat]

@Man'O'Green
Any ideas ?

 

[Mañ'O'Green]

@Man'O'Green
Any ideas ?

I did not get this tag?

You have a problem but I simply have no experience with those inputs, they are meaningless to me. a gram, a teaspoon or a ml is a measure of volume and not the PPM of what you are adding. So I am no help with this one. You do seem to be watering wrong. You may need to add a surfactant to help re-wet the substrate.

What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water - water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering. Coco can be fertigate many times a day if you want to continually present fresh balanced nutrients to the roots. Begin fertigation 2 hours after lights on and end it 2 hours before lights out.

 

[KodakB]

tbh to me those spots on the lower leaves just seem like spill over from the nutrient solution..

Where did you get that biobizz nutrient schedule? That schedule is very different from biobizz's..

I dont think ppm matters here since biobizz nutes are 100% organic, but correct me if im wrong...

1ml of each in 14 ish litres of water.

What do you mean by this? 1ml per 14L ?! Thats effectively 0.071ml / 1L which is basically nothing...

 

[Bill.de.Cat]

I did not get this tag?

You have a problem but I simply have no experience with those inputs, they are meaningless to me. a gram, a teaspoon or a ml is a measure of volume and not the PPM of what you are adding. So I am no help with this one. You do seem to be watering wrong. You may need to add a surfactant to help re-wet the substrate.

What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water - water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering. Coco can be fertigate many times a day if you want to continually present fresh balanced nutrients to the roots. Begin fertigation 2 hours after lights on and end it 2 hours before lights out.

Yeah, it didn't present as a tag, not sure what happened but might have to do with the other problems my phone has been having with the site.

 

[Watweed_2009]

I did not get this tag?

You have a problem but I simply have no experience with those inputs, they are meaningless to me. a gram, a teaspoon or a ml is a measure of volume and not the PPM of what you are adding. So I am no help with this one. You do seem to be watering wrong. You may need to add a surfactant to help re-wet the substrate.

What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water - water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering. Coco can be fertigate many times a day if you want to continually present fresh balanced nutrients to the roots. Begin fertigation 2 hours after lights on and end it 2 hours before lights out.

Thanks for that that's a great help. I'm litteraly a new born at all this and I've read so much and learned a lot but I'm still a million miles off lol. Cheers though