can any one identify this problem

does anyone know what is causing this in the pics.
its starting to effect nearly all my plants, leaves turn yellow then have the brown on the leaves, also the affected leaves start to dry, ph is 5.8 to 6.
nutts are canna coco a+b and soil is canna coco soil, temp is 75deg at all times.
added bio bizz bio grow last night as its more in NPK than coco, flushed as well 3 days ago, soil is just damp.
hope the info helps

you need to up the nutrients. and a higher pH, 6.0 is way too low. Go for 6.5

kudaross said:

you need to up the nutrients. and a higher pH, 6.0 is way too low. Go for 6.5

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so you saying its a nutt lockout do to ph being to low???

rollingrock said:

so you saying its a nutt lockout do to ph being to low???

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It very well could be because at 6.0 certain nutrients are being locked out. Try fixing the pH first, then up the nutrients.

forgot to add that the coco is the fibre type not the bagged coco soil, so if i up the ph to around 6.5 or even 7 or is 7 to much???

6.5 is good. It might not hurt to go higher, because coco soil tends to be acidic.

TOO LOW PH just had that problem.

can any one else advise if it would defo be the ph or not

1stHempBankLBGrower said:

TOO LOW PH just had that problem.

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how long did it take to correct this problem after adjusting the ph???