Indoor grow, 430w HPS, 5 gallon buckets, 3 plants (only 1 is sick), pH of water: 6.4-6.8, unknown TDS, unknown soil pH, BioCanna organic nutrients, 31 days flowering. ~26 degrees Celsius and ~50% humidity.

Stunted growth, can't support it's own weight (It's nearly 6'6" including the bucket tho); first thing to show on an otherwise green leaf is very small orange speckles, then the leaf turns yellow, then brown; however some leaves' first sign is yellowing tips and edges. Purple stems (might not be a problem, other plants showed it a bit too so it could just be the strain)

Any help with diagnosing the problem and the remedy will be greatly appreciated.


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This is one of the healthier plants, it has a hard time supporting it's own weight too.

29 views and no help!?!?! BUMP

She needs calcium and phosphorus.
BioCanna is good stuff. Are you using full dosage?

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I don't see a problem with growing small quantities of cannabis to supply ones own medicinal needs. I do not par-take in, or condone, the illegal growing of cannabis for commercial purposes.

First of all, thank you! And yes I'm using full strength BioFlores (the flowering nutes, 2.5-2.0-5.0) along with Hygrozyme.

Should I mix a more diluted food for this one plant?
How can I get more calcium and phosphorus into her?

I'm not an organic grower and I don't know if you want to try and stay organic.

I would hit her with some cal/mag, available at any garden supply, and some Canna PK 13/14, available at your hydro store.
Then watch her take off.

Edit: Definitely stick with the full strength nutes, those nutes aren't very strong at all.

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I don't see a problem with growing small quantities of cannabis to supply ones own medicinal needs. I do not par-take in, or condone, the illegal growing of cannabis for commercial purposes.

Yup,,,cal-mag+

does your water contain chlorine?

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Kali Mist/Colombian Red Haze journal

Here's my last grow AK47 and PPP in hempy journal

the other thing i would say is put some stakes in the dirt so your plants can use it to lean on .

Thanks everyone, as far as staying organic; I would rather go non-organic to have this plant be healthy than to lose the bud from it, I'm going to go get some Cal-Mag tomorrow and I'll look into PK 13/14.

My water does have chlorine but I use a water filter and I leave the water in a big jug for a couple days before I use it.

I guess I'll be getting some stakes for these girls when I go shopping.


If anyone knows organic ways to add calcium and phosphorus I would really like it to hear it, otherwise I'll be going non-organic; not too big of a deal to me, but I would rather stay organic if I can.


Thanks guys.

if you are having trouble with the plant being unable to support its own weight, just stick a stick in the dirt and tie that plant to it!

another thing to think about for your next grow is a trellis. In the November 2008 High Times, they show you how to make a great trellis that will be there for grows and grows

http://www.zinio.com/pages/HighTimes...293217234/pg-8

look for page 46 or something like that, if you're interested.

Boil some egg shells and add a couple tablespoons of epsom salts, stir, filter shells out and let cool. I had similar issues dealing with my crappy water and it works well.