Help me ASAP, MG def? PLEASE

[BudBunker]

Ok, i am growing in soiless tubs,my nute mix was 50ml per 5 gallons liquid karma, 25ml per gallon cal-mag, and 20ml per gallon pbp grow, and 30 ml per gallon rhizotonic. My PH is about 6.2, 800 PPM, about 200 from the PBP-G. I use RO water

Tubs hold about 2 cubic feet or 50 liters. First watering was with 5 gallons of nute mix per tub. 2nd watering was plain water, 2.5 gallons per tub, and last watering was nutrient mix. the oldest tub is about 10-14 days, i forgot, and its been flowering 2 days.

They are showing signs of a MG defeciency i think. Should i water them with plain RO water and epsom salts?

It looks like it wants to show on most of my large leaves, but earlier sign were on old leaves.

 

[BudBunker]

the tubs pictured above are 1-3 days transplant.
here is the oldest tub

and my soiless mix

 

[00420]

hey bunker....

add 1/4-1/2 tsp per gallon epson salt
if it still shows after that u can bump it up to 3/4-1tsp

also add it to what your feeding allreaady theres a big debate on when n how mainy feeds to add it in ( i put it in ever other one on most strains ) grape likes it everyfeeding your gonna have to fell out for your self on this as it has a lot to do with the strain...


this pic

looks to be (leaf curl ) a ph prob probly to high?
your putting in 6.2 but your soiless mix allso has dolomite lime witch is a ph up buffer

( member what we talked about whne u was here )

this pic shows sign of ..................
lack of N is my guess its from the ph swang ? not uptaking enuff water/nute's........

 

[MynameStitch]

im sure that soil doesnt have nough buffering for cannabis

you want your ph around 5.5 to 6 your ph is to high you need to lower it add some more lime to your mixture

you will not see a mag def in a plant tht small nitrogen wil come first before magnseium in a plant that size
what lighting are you using on your plants

 

[MynameStitch]

forgot too another thing i would cut those and put them into each pot
those roots are tangled now im sure and will fight for rootspace and nutrients

you need to have each and everyone in there own pots

 

[BudBunker]

forgot too another thing i would cut those and put them into each pot
those roots are tangled now im sure and will fight for rootspace and nutrients

you need to have each and everyone in there own pots

I find this very hard to belive. You definatly do not need them in single pots.

 

[00420]

hey budbunker listen to this guy...... he know what hiz talking about...
and much more hip to the def then i am....

2 ? stitch is not lime a up buffer not a down why would he need to add more?
and why single pot's i have seen lot of ppl use this way of growing

 

[MynameStitch]

from exp i have grown multiple plants in pots when i first started to grow and i did this till my 2nd grow i had problems with one plant taking over the other and then the one that was stunted never grew
and no matter what i couldnt do anything to fix it

i could bring in here a lot of people and tell you the same thing that when you have that many plants in a tray you WILL 100% have problems because they are all going to grow at different rates the one next to it may grow faster and have faster growth rates
then that one will take over the next and then compete for nutrients

im telling you id put every money i own on this

you will have rootbound problems and nutrient issues if you do not get them into seperate pots
and put them into soil that is not made of high strength nutrients or you will burn them from the soil mixture

lime is an up buffer and not a down buffer
i did a test and put it in blazeofglorys thread he made about the lime issue from the growfaq's

it stated lime could be used for an up buffer
yes it can but it also didnt state that you had to use exsessive amounts to where it would cause an im blance of magnseium calcium and would cause some problems with nutrient absorption

lime should only be used as a up buffer and not a down buffer because if you use it for down you have to use A LOT of it in order to bring the ph down

he would need to add more lime because its obvios from the plants its not balanced out right for that strain

all strains are different in requiring care and ph
some can take the out of bnalance ph some cant

bunk are all these same strain?

you got to remember too these soils are mainly for other types of plants
the only mixture i have seen with enough lime to balance out for cannabis is pro mix
the rest brands have all had to add at least some kind of pelitized dolomite lime

 

[BudBunker]

no there is mixed strains..
Im cunfused as why i would need to add lime for an up buffer if my PH is already too high?

Im really wishing i decided to use a differant method. I already have 8 tubs full with 120 plants going.

 

[MynameStitch]

you said your ph is 6.2 right?
how are you testing your ph
you are going to have alot of problems then since they are different strains

120 pots is alot of work

 

[00420]

you said your ph is 6.2 right?
how are you testing your ph
you are going to have alot of problems then since they are different strains

120 pots is alot of work

the water/nute he was adding was 6.2

i belive he has a tri meter like me ( for nute's)

then has a one of them soil ones for the soilless mix ( and its over 7.0 ) i dont member he told me 7.2 i think this is why he has prob's
ph is way high i told him this befor he started ( ph prob )
i have growen in same root space and dont have probs ( a colisuim )
i fill it up with 100% perlite and grow............
2 out of 60 get behind and i just pull them to let the others take over..

 

[guineapig]

ok am i right when i suspect that the plants are having trouble absorbing nitrogen?

now is this due to a pH imbalance in the soil? is there a lack or an excess of N?

and seeing that all these are in the same tub, what should budbunker do?

c'mon IC lets get some ideas churning!!!
i will check back here often and i hope we get a plan together....

-kind regards from guineapig

 

[00420]

ok am i right when i suspect that the plants are having trouble absorbing nitrogen?

now is this due to a pH imbalance in the soil? is there a lack or an excess of N?

and seeing that all these are in the same tub, what should budbunker do?

c'mon IC lets get some ideas churning!!!
i will check back here often and i hope we get a plan together....

-kind regards from guineapig

the lack of n would be from the ph to high i belive...

as far as same tub's i dont see any prob for the fact that i do it in my colis .