Help please read as much as I can and still have problem

Not just jumped on tried a few things first,
Need help now please

Soil grow whole plants yellow but leaves just starting to fall off started when I switched to flower now in week 3 flower


Temp 25-27 night 19-21
Humidity 45-55
Canna Tera pro pluse
Canna florets 40-50mil per 10 lt. !!!!!
Cannazym 20mil every few feeds !!!!!
Ph 6.5-6.8
Plant magic 10mil
Bud buster 1/2 teaspoon
Coco just started few leaves yellowing all in middle of plants


Coco flower leaves slight light green rest good green
Feeding twice a day plenty of run off
Coco canna
PH 5.8
A&B 40mil of each now up it to 60mil that's when it started only last feed
Cannazym 20mil every few feeds
Plant magic 10mil
Bud buster 1/2 teaspoon

Thought it was N def so started them on Plant magic and the was happening before bud buster on soil but not Coco

Tips look like overfeeding.
Leaves yellow & die all the time, overall how does your plant look?

Looks not to bad just a yellowing slightly all over the centre of the plant ,got 4 weeks left so hopefully be ok ,was PH them at 6.8 I believe that was to highly? ,flowers looking good just it's seems to defo get more yellow though closer to the lights going off , would to much light make the plant look yellow ? Got 3x 600w in cool tubes and scrolling them on 4 plants the the 4 in coco are looking magic

ben19710 said:

PH them at 6.8 I believe that was to highl

Click to expand...

Sorry I can't help with soil

Cheers m8

Could be too intense light. Could be the strain needs extra booster of N during the stretch .

Look hungry for N to me.

OK, so when I look at the pictures. I see totally a different problem ---

Ya' all missed the key thing he's doing......"Bud Buster"
WAY, WAY to much P!
WAY, WAY too early!

These are about toast....STOP any extra P and K supplementing,,,,NOW!

Next time, Don't bother with any bloom booster*.....

*Your base is a Canna product.
Canna and Hesi are 2 product lines that do not play well with other lines, or by not using the whole "core" of the line.
In other words. Canna and Hesi are charted and formulated to actually work with their respective "boosters" in bloom.

It should be noted that Hesi,and Canna. Start "booster"use 2 weeks after the flip and, stops the use of their "booster" 2 weeks before harvest....They understand that elevated K levels will decrease final THC counts. They also stop the higher P to prevent early plant finish. Another reason you would loose.
They start 2 weeks into bloom to NOT over do P too early and the amount they boost is not to bad.....

You have CLASSIC P tox!

You can mask or control high P with more N but, that brings in other problems. Not to mention that once the plant looses the battle between the high P and High N.....The plant will yellow out even faster. It will literally die before it can actually properly finish...

NO high P use! The plant needs far less then you think.....and far, far less then nutrient makers of "bloom boosters" lie about!

Thanks for the help guys much apresiated ,I'll stop the booster see how they go for the next few feeds ,hopefully see the differences ,they haven't got any worse infact look much better ,when I started PH at 6 but still got about 6 leaves on each plant complete yellow and falling off right in the centre of the plant