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H3ad 6/9 cal/mag problems

petemoss

Active member
have since moved back to organics, but i always had cal/mag problems when runnin the rez recipe in coco. maybe thats because when i was running it, The Recipe said SPECIFICALLY to run it at 6.0. funny now rez is going round saying 5.5. would have been nice to know that 2 years ago. just saying......

Yes, and here's a post from Rez's own thread where he says to Ph to 6.0 http://www.icmag.com/ic/showpost.php?p=1704759&postcount=118

So if he never had anything but perfect plants, why did he change to 5.5? (The Shadow knows....but he's not saying...)
 

BerndV

Member
Anyone using RO water and having problems should first try adding epsom salts. After having problems in RO water with both the GH 6/9 and H&G coco nutes, I discovered rather quickly that it was the magnesium that was the missing nutrient, not the calcium. H&G coco nutes have LOTS of calcium and the same problems surfaced. I have not had a single problem since I began adding 1-2 grams per gallon of epsom salts.
 

headband 707

Plant whisperer
Veteran
Personally I hate coco Head works with it and he obviously has great results and there is better coco then other but I don't work with it because it is a pain in the ass with locking out Cal-Mag etc. peace out Headband707
 
C

Carl Carlson

Yes, and here's a post from Rez's own thread where he says to Ph to 6.0 https://www.icmag.com/ic/showpost.php?p=1704759&postcount=118

So if he never had anything but perfect plants, why did he change to 5.5? (The Shadow knows....but he's not saying...)

Both numbers are meaningless if the alkalinity in the water supply is low enough.

http://www.staugorchidsociety.org/PDF/IPAWaterQuality.pdf
To compare the effect of water pH or alkalinity on the ability to raise pH (or neutralize acid) in a medium, 50 ppm alkalinity (which is a low alkalinity) would be similar to having a water with pH 11 (i.e. an extremely high pH). A water with a pH of 8.0 would have the same effect on substrate pH as an alkalinity concentration of only 0.05 ppm (i.e., almost nothing).
 

hereigrow

Member
http://www.spectrumanalytic.com/support/library/ff/Mg_Basics.htm


Check out this link some useful info dor high cec mediums such as coco. It explains how mediums with a high cation of K competes with magnesium uptake.
I have had huge mag def problems using AN sensi grow,cal mag at 5.5 ph. My experience has been with coco pith and seedlings , the growth clawed downwards and showed classic mag def on others.

I ended up foliar spraying Epsom at 1 tbsp per gallon every other day they have since turned into healthy plants. I also ditched the sensi series for gh 6/9 and slightly raised my ph to 5.6-5.7 alternating in an attempt to make mag more availible...seems to be workinf like a charm so far.
 

roasthawg

Member
http://www.spectrumanalytic.com/support/library/ff/Mg_Basics.htm


Check out this link some useful info dor high cec mediums such as coco. It explains how mediums with a high cation of K competes with magnesium uptake.
I have had huge mag def problems using AN sensi grow,cal mag at 5.5 ph. My experience has been with coco pith and seedlings , the growth clawed downwards and showed classic mag def on others.

I ended up foliar spraying Epsom at 1 tbsp per gallon every other day they have since turned into healthy plants. I also ditched the sensi series for gh 6/9 and slightly raised my ph to 5.6-5.7 alternating in an attempt to make mag more availible...seems to be workinf like a charm so far.
Hoping this post saves me... been having all kinds of cal mag issues running hg cocos. Adding cal mag has been no help... might be overdosing on cal, gonna swap out and try 1ml/gal epsom instead.
 

hereigrow

Member
You prob have a mag problem more than Ca. Try foliar with Epson salts and ph 5.8 to try and pick up some the mag in the coco already...I'm starting to alternate between 5.5,and 5.8. Mag uptake is no good at 5.5
 

KidKId

Member
I am running H3AD's formula now, with 1 TSP of Epsom per gallon. No problems at all, plants are big, healthy and green. Growing quickly.

If you are having CAL problems with H3AD's formula, it's because you are locking it out. Not the formula itself. All the detailed information of the formula is posted. The numbers are there. The only thing missing is a bit of MG. H3AD stopped using Epsom b/c he was using tap water(or was it well water?). Which has it in it already. I use pure RO water, so I am continuing the feed my plants with the Epsom. I have no problems, and both are two different strains.

People need to understand. When you buy Cal-Mag, you are adding a lot more Cal, than mag. I have Calimagic Plus (or whatever, by General Hydroponics), and it has tons of calcium. I can't even use it because combined with the calcium in H3AD's formula, it would simply be to much.

My only question going into Peak flower in a few weeks, is when to pull Micro. He is not clear, and changed is mind a lot. I am thinking of just pulling it one week prior to my 10 day flush, and upping my Bloom to 12 ml a gallon.
 

hereigrow

Member
Experimenting is half the fun. I was going to just keep the 6/9 and run kool bloom liquid and finish with powder..
 

dirtisbeautiful

New member
I have been on the 6/9 formula since switching from promix to coco and am very pleased with the results. They veg much faster and are very healthy. I too was having a problem after the first couple of weeks in flower with a mag deficiency and tried to cure it with calmag and it just got worse. I also believe that there is enough calcium in the 6/9 formula and by adding more leads to mag lockout. I have since started using dynagro magpro @ 1/4tsp per gal and am very happy with the results. Three weeks in and the plants are healthy and vibrant with no signs of deficiency. I just thought I would share this info and I hope it helps some of you that are struggling with this issue.....peace!
 

hereigrow

Member
Gotta let the ph fluctuate between 5.5-6.0 to unlock cal on the lower end and mag on the higher end. Add all the cal mag u want if its locked out its just building up...IME ofcourse
 

KidKId

Member
I don't feed every day, every twice a day like some. I feed every other day, and was feeding every two or more days at times in veg. When I do feed, I feed until significant runoff, about 30-50 percent runoff.

In coco, from what I read, PH will fluctuate upwards a bit between feedings. I was doing 5.5 in veg, then switched to 5.8 closer to flower. So I assume my PH was slowly drifting upwards before feedings.
 
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