????? HELP Lack of, but lack of what. HELP ?????

My plant is lacking in something but what. Im into 29 days flower and just did as res change with proper PH'ing. This has happen very sudden and only to this plant. I know nothing of strain it was a mix freebie from Sannie. I use TecnaFlora nutes ,rockwool,hydroton,600 watt air conditioned room. They are turning yellow and getting dry and EASILY falling off. Help me out Id hate to lessen my crop

Do you flush????It is a good idea to flush especially when using rockwool.Maybe that strain is nutrient sensitive.What is your tds/ec levels??

When I did my Res change a few days ago I filled my 55 gal half full of fresh water and ran the cycle 2 times to flush. I drop my ph to 5.8 and let it float to 6.1. PPM is 1280. All has been well up till now as in this morn ? I have a total of 4 DIFFERENT strains 3 unknown. The rest seem cool.

When you flushed did you monitor if ppm's stop rising to ensure a proper flush,also that plant might just be nutrient sensitive,try reducing your nutrient strength.Also have you checked the roots,maybe root rot???Use h2o2 for that.

No I never thought of watching my floods return flush PPM for it to lower. Sincerely I dont feel its that. I flushed and am using HALF strength ppm this may be it. Maybe. I want to say maybe nitrogen or phosphorus ????

http://www.gchydro.com/faq_nut.asp scroll down to

Also do you use RO water??,if so you need to add cal mag

it looks alot like they need N

italia954 said:

it looks alot like they need N

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Will lack of N make them die fast and fall off ?

It could be a deficiency or excess of nutrients the article explains all.

Hey man---
Check this out, it;s all you need.

http://www.greenmanspage.com/guides/tables.html

Best wishes

So confroted with this problem and NOT specifically knowing what it is how should I approach adding nute additives or even a direction in steps that will be fast but safe.

coopdevillan said:

So confroted with this problem and NOT specifically knowing what it is how should I approach adding nute additives or even a direction in steps that will be fast but safe.

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Flushing correctly and start 1/2 strength nutes,and wait a couple days to see if new growth looks healthy then slowly increase nutrient strength.Have you checked roots???Do you add h2o2 to your res ??This could very well be the prob. also.Has happened to me several times.Do you use tap water or RO water??

i would also love to know the best answer to this as wellas my plants are doing the SAME EXACT thing. i thought i was over nutting at first and then checked my ph and got it to stay around 6.5-7. the top growth has been good but stilla little bit stunted. ive flushed but if its asking for food and im flushing thats not going to fix the problem. im gonna feed them tommorow and see how they take it.

wilt said:

i would also love to know the best answer to this as wellas my plants are doing the SAME EXACT thing. i thought i was over nutting at first and then checked my ph and got it to stay around 6.5-7. the top growth has been good but stilla little bit stunted. ive flushed but if its asking for food and im flushing thats not going to fix the problem. im gonna feed them tommorow and see how they take it.

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You must wait a little while before normal growth resumes,if that does not fix your problem then there is another variable(s) causing the problem.you must trouble shoot thoroughly.In most cases it's either deficiency,excess,and or root rot for hydroponics.

alright well, its been about a week since i flushed with plain water then added a very light nut solution to the end of the flush. new growth is great and getting frosty. middle area of plant is all dead( the larger fan leave, not the new fanleaves or the new buds) this leads me to think deficency. im doing my best to keep my ph around 6.8 but its hard with only a probe soil tester. they seeme dry tonight so tommorow i will feed with a 1/2 strgth nute solution.

coopdevillan said:

When I did my Res change a few days ago I filled my 55 gal half full of fresh water and ran the cycle 2 times to flush. I drop my ph to 5.8 and let it float to 6.1. PPM is 1280. All has been well up till now as in this morn ? I have a total of 4 DIFFERENT strains 3 unknown. The rest seem cool.

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My ph would be 7 at that point in flower.

yeah it looks like nitro burn , or no where near enuff .

see thats the problem i have.
people say its either a defficeny of a certian element and then others say i need more. im right in the middle as im to scared to feed it fearing more burn but then i dont want to not feed it if it needs it.
remember my leaves are doing the SAME EXACT thing excapt mine started with spotting then lead to the leaves slow yellowing drying and shriveling up like in the posted pictures

wilt said:

see thats the problem i have.
people say its either a defficeny of a certian element and then others say i need more. im right in the middle as im to scared to feed it fearing more burn but then i dont want to not feed it if it needs it.
remember my leaves are doing the SAME EXACT thing excapt mine started with spotting then lead to the leaves slow yellowing drying and shriveling up like in the posted pictures

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Are you growing in soil??.......if so How often do you water and how often with nutrients if you use any??What kind of soil?