hey guys i use veg+bloom RO nutes by hydroponic research and it seem like no matter what i have a magnesium deficiency, 11 of 12 plants have (all except critical+ 2.0 in a dwc bucket) it. i been feeding like 1.1-1.2 e.c in flower at 5.9 is this too weak for these nutes? i would just add cal mag but ive read that will throw everything off because v/b has plenty magnesium in it already. im going to try raising the ph in flower to 6.2 even though my vegging plants are at 6.2 and having the same problem. could i have got a bad batch of the v/b with little magnesium?
veg+bloom constant mag deficiency
- Thread starter jronnn
- Start date
ThaMagnificent
Well-Known Member
I run it at about the 1000ppm and dont have this issue. I run ebb and grow buckets. Res change once at Week 2 flower so I can add the bloom booster and then top off with v+b and just top off weekly until flush
polishpollack
Well-Known Member
EC vs. PPM depends on what scale you are using. to some scales, 1.2 ec is pretty high. it's better to use ppm instead of ec.
chemphlegm
Well-Known Member
I would buy a different proven system for the next change at least to see any differences in health.
I'm betting 100 dollars that you do not in fact have a magnesium deficiency though. pics or
GTFO
im4satori
Well-Known Member
holy shit
I disagree with almost everything that's been said
EC 1.2 is a good number for a hydro system and its not 600ppm
EC 1.8 or 2.0 is very very high unless you grow in soil and water with plain water every other (do you grow in soil?)
an EC meter is far better than a ppm meter
I disagree with almost everything that's been said
EC 1.2 is a good number for a hydro system and its not 600ppm
EC 1.8 or 2.0 is very very high unless you grow in soil and water with plain water every other (do you grow in soil?)
an EC meter is far better than a ppm meter
im4satori
Well-Known Member
I agree with this
im4satori
Well-Known Member
why is an EC meter better than a ppm meter
ppm meter convert an EC reading by a factor of .5 or .7 depending on the brand of ppm meter
so if you own a hanna ppm meter and its conversion is .5 its going to provide a different reading than a blue lab that might convert at .7
EC on the other hand is the same no matter which brand
if you meter reads 1.2 so will mine despite the difference in brand
so when I say I feed EC 1.2 you know what it is
you saying I feed 1000ppm might be 800ppm on some one else meter
ppm meter convert an EC reading by a factor of .5 or .7 depending on the brand of ppm meter
so if you own a hanna ppm meter and its conversion is .5 its going to provide a different reading than a blue lab that might convert at .7
EC on the other hand is the same no matter which brand
if you meter reads 1.2 so will mine despite the difference in brand
so when I say I feed EC 1.2 you know what it is
you saying I feed 1000ppm might be 800ppm on some one else meter
ill post pics tomorrow but thats the point of my post, vegbloom is a 1 part formula and i havent added anything else to the res ans i have plants at different e.c and all showing similar leaf problems so i dont see how its an actual nute problem unless the powder i got has fucked up ratios
im4satori
Well-Known Member
whats the npk , calcium and magnesium numbers on the bottle?
did you say what your medium is? soil,coco, hydroton?
im4satori
Well-Known Member
heres your problem
at 4mls per gallon the N is low for veg
the K is good
the calcium high, very high
at 5mls per gallon
the N is good
the K is high
and the calcium extremely extremely high
to balance your veg formula ideally youd want something that look like
130 K
65 Ca
33 Mg
3:2:1 ratio
at 4mls per gallon the N is low for veg
the K is good
the calcium high, very high
at 5mls per gallon
the N is good
the K is high
and the calcium extremely extremely high
to balance your veg formula ideally youd want something that look like
130 K
65 Ca
33 Mg
3:2:1 ratio
im4satori
Well-Known Member
this is as close as I can get you with your nutes
itll be low on N but you can spray amino acids to offset
4mls per gallon of your nutes and 1gram per gallon Epsom salt
that's a good deal of Epsom salt and magnesium but it will be required to offset the high calcium
but it gives you the 2:1 ratio between calcium and magnesium
adding calmag will only make your issue worse because youd be adding more calcium
itll be low on N but you can spray amino acids to offset
4mls per gallon of your nutes and 1gram per gallon Epsom salt
that's a good deal of Epsom salt and magnesium but it will be required to offset the high calcium
but it gives you the 2:1 ratio between calcium and magnesium
adding calmag will only make your issue worse because youd be adding more calcium
im4satori
Well-Known Member
in short....
even the formula I gave you at 4mls and 1gram of Epsom is seriously flawed still having too much calcium and not enough nitrogen
it impossible to raise it to get the nitrogen up without cranking the calcium up so high it locks out the magnesium
you should switch your brand of nutes
what your using would be good for and is likely tailored toward tomatoes since they are calcium hogs but pot not so much!
mj is a magnesium hog
even the formula I gave you at 4mls and 1gram of Epsom is seriously flawed still having too much calcium and not enough nitrogen
it impossible to raise it to get the nitrogen up without cranking the calcium up so high it locks out the magnesium
you should switch your brand of nutes
what your using would be good for and is likely tailored toward tomatoes since they are calcium hogs but pot not so much!
mj is a magnesium hog
polishpollack
Well-Known Member
interesting to see a one part fert for both veg and bloom, if I understand this right. Just one container?
d1stort
Member
JungleBoyz posts clearly in the new Marijuana Mania video that their RO water comes out of the tank and gets pre-treated with cal-mag before it even gets the base nutes. I do the same to get my water to around 80-100 ppm before I add 6 grams per gallon, no deficiencies or problems across 6 strains in two rooms. If the Mg is truly your problem, there are supplements like Mag-Plus that I use on two of my strains that burn through the magnesium faster than everything else. Only ever needs one or two feedings at 2ml per gal to correct Mg for my setup.