Sick autoflower with yellow patches with brown spots

[Keep Calm And Grow]

Morning people,

Decided to make new thread as no one really saw it on my last post!


- so i have dutch passion Critical Orange Punch autoflowers

- 20/4 light schedule 600watt

- 42 and 37 days old

- Highs 27c lows have been 15c but added a heater and is now 18c

- haven't PH'ed corrected yet as growing with organic nutrients and soil (PM Soil with the oldtimers nute range)

- Last feed was 12th june with 2ml grow and 1ml bloom with 25%tap and 75%RO



About 4 days ago which was 1 day after spraying with c no insects I saw yellowing of lower leaves with black marks, i looked it up and it could be due to PH but why would they only now start showing ph problems. Or it could be a fungus, Or burn from spraying? has anyone any idea what it is? :/


any input will be appreciated!

Have a blessed Day

[lipnobody]

using ro water has no trace elements, shes certainly lacking in something, locked out prehaps.
whats yer background ph/ec of your tap water if you know?

[Keep Calm And Grow]

using ro water has no trace elements, shes certainly lacking in something, locked out prehaps.
whats yer background ph/ec of your tap water if you know?

I am not too sure tbh i will be picking up a EC meter soon any recommendations?

I am mixing it with 25% water and its hard water.

should i flush the soil with ph'ed water, and spray with epsom salt?

thanks for reply

[Kurdt]

Is that white stuff mildew?

[lipnobody]

Is that white stuff mildew?

be a fair chance its the insect spray kurdt!
whats the brand that you used KCAG???

[Keep Calm And Grow]

I use the C-No Insects one and that white residue is from that.

I am going to flush with ph'ed water and epsom salt spray it on monday hope this clears it up!

Hopefully that will sort it out!

Thanks for the input guys

[lipnobody]

just so you know that the visible damage will not recover. you can tell with the changes in the new growth,the small leaves starting to grow along the stem.

n i wouldnt with ph water mate, yer in soil not coco. flush the pot with water, jis remember to feed em after hold off on the ep salt spray until things start showing signs of it!

[Jay_GY]

How far away is your light from the canopy dude? youve got a lot of drooping going on from what I see. I've ran into similar problems when I've turned up the light from 250 watt to 600 watt to early in the grow too much light can cause all sorts of problems and lockouts something to consider tho.

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[Keep Calm And Grow]

How far away is your light from the canopy dude? youve got a lot of drooping going on from what I see. I've ran into similar problems when I've turned up the light from 250 watt to 600 watt to early in the grow too much light can cause all sorts of problems and lockouts something to consider tho.

Sent from my PRA-LX1 using Tapatalk

Hey mate!

I think you could be right it was quite close like 10inches (i didnt measure it as noticed it was close and moved it up straight away)

I moved it away to like 18inches as some of the top canopy was bleached should i move it further away?

Cheers

[Keep Calm And Grow]

just so you know that the visible damage will not recover. you can tell with the changes in the new growth,the small leaves starting to grow along the stem.

n i wouldnt with ph water mate, yer in soil not coco. flush the pot with water, jis remember to feed em after hold off on the ep salt spray until things start showing signs of it!

cheers bro,

Just plain tap water or RO mixed with tap and when u say feed them after you mean straight after flush or when soil is dry again?

Thanks

[Greengrass]

cheers bro,

Just plain tap water or RO mixed with tap and when u say feed them after you mean straight after flush or when soil is dry again?

Thanks

I'm not speaking for lipnobody but yeah general idea after a flush in soil is to put some feed back in straight after flushing usually at half strength mate

[Jay_GY]

Hey mate!

I think you could be right it was quite close like 10inches (i didnt measure it as noticed it was close and moved it up straight away)

I moved it away to like 18inches as some of the top canopy was bleached should i move it further away?

Cheers

16" is the sweet spot at 600 watt if it was me I'd do as most have suggested and flush, then feed at half strength and maybe dim the light too 400 watt for a day or two give them a rest... If you you can't dim your light raise it another 2 inch then slowly drop it down again to 16" as they recover. Good luck should recover no problem I've had autos in worse states.

Sent from my PRA-LX1 using Tapatalk

[Keep Calm And Grow]

16" is the sweet spot at 600 watt if it was me I'd do as most have suggested and flush, then feed at half strength and maybe dim the light too 400 watt for a day or two give them a rest... If you you can't dim your light raise it another 2 inch then slowly drop it down again to 16" as they recover. Good luck should recover no problem I've had autos in worse states.

Sent from my PRA-LX1 using Tapatalk

Getting worried because some of them are starting to smell really sweet and orange zesty and seeing them going yellow and ill is sad

anyway i did as all of you said which was to flush then feed! i flushed with about 5l of water a pot an then watered with nutes another 5l with .5ml grow and 1ml bloom. i also just lifted my light up a bit but will probably put down and just dim to 400watt for the next day or two i did this yesterday!

when i went to check today they were not as droopy and have perked up but the leaves to me are still yeloowing a it but we will see what happens in the next few days!

I hope this fixes them up! so in future to avoid this should u flush every 2-4 weeks?

thanks!

[Jay_GY]

Getting worried because some of them are starting to smell really sweet and orange zesty and seeing them going yellow and ill is sad

anyway i did as all of you said which was to flush then feed! i flushed with about 5l of water a pot an then watered with nutes another 5l with .5ml grow and 1ml bloom. i also just lifted my light up a bit but will probably put down and just dim to 400watt for the next day or two i did this yesterday!

when i went to check today they were not as droopy and have perked up but the leaves to me are still yeloowing a it but we will see what happens in the next few days!

I hope this fixes them up! so in future to avoid this should u flush every 2-4 weeks?

thanks!

Nah I never flush till the end unless I need to because of a problem. Just got easier on the nutes and light. Better to under feed than over feed etc. If they've started to perk up then you've done the right things so far

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[Greengrass]

Nah I never flush till the end unless I need to because of a problem. Just got easier on the nutes and light. Better to under feed than over feed etc. If they've started to perk up then you've done the right things so far

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Well he's not flushed really maybe just a bit of a leeching of the soil with just 5 litres of water first, it'll get rid of some of what might have been cooking up his mud depending on his tub sizes
Flushing can shock anyway so probably best the way he has done
Me I have I think only need to flush fully twice and I put me tub in the bath then put through 30-45 litres through to strip out everything in the soil then just the final 2 litres I fed at quarter strength but still shocked them for a couple of days but I suppose that was more to do with the tap water temperature

[Keep Calm And Grow]

Well he's not flushed really maybe just a bit of a leeching of the soil with just 5 litres of water first, it'll get rid of some of what might have been cooking up his mud depending on his tub sizes
Flushing can shock anyway so probably best the way he has done
Me I have I think only need to flush fully twice and I put me tub in the bath then put through 30-45 litres through to strip out everything in the soil then just the final 2 litres I fed at quarter strength but still shocked them for a couple of days but I suppose that was more to do with the tap water temperature

Thanks for reply they still seem to be getting more yellow tho the brown spots have stopped appearing tho i think!