Is This Magnesium deficiency? Please Help

kulan hunter · Apr 30, 2008

Is this Magnesium (Mg) deficiency or something else please help me,(pic 1)
I also have red fan leaf stems on one of the other plants,(pic 2) Phosphorus(P) deficiency?
I am using ionic bloom nutes with no other or supplements.
They are under (left to right pic 3 150w hps, 125w envirolite flowering bulb, 150w m/h)the front left is the one with red stems and the front right is the one with bad leaves mainly on the bottom of the plant.
i am only using 4ml of nutes per litre of water.
should i get some epsom salts?
Oh they have been in flowering for 4weeks and 1day.

kulan hunter · Apr 30, 2008

help me please someone
also they are in soil cheap asda compost + 20% perlite
temp is 82 humidity is 50-55% (65% after watering)
i think the ph is about 6.0-6.5
i watered them today ( with nute 5ml per litre)then noticed the marks on the leaves just after
i watered them last 5 days ago (with same nute but at 3ml per litre )they were dry last night left watering till today

before that they had plain water for 2 weeks as they were transfered into bigger pots

kulan hunter · May 1, 2008

bump bump anyone

mmclean3 · May 1, 2008

bump bump this was giving to my by Enigma!

For all RIU'ers:

Plant Nutrient disorders in hydroponics, symptoms, causes, cures, fo

kulan hunter · May 1, 2008

i have read a bit on plant problems and want some type of help, don't want to do any more harm to them i think its a mg problem solved by epsom salts but would like some conformation on this ANYONE

mmclean3 · May 1, 2008

kulan hunter said:
i have read a bit on plant problems and want some type of help, don't want to do any more harm to them i think its a mg problem solved by epsom salts but would like some conformation on this ANYONE

ur best bet is to hit up a hydro store around ur area. Ask them for a nute or supplement etc.. that is high in mag cause ur plants have mag def.

mmclean3 · May 1, 2008

Thats if thats ur prob. I'm checking out ur pics right now. It could be nute burn. It could be nitrogen def.. are u using nutes what kinda nutes whats the npk etc.

kulan hunter · May 1, 2008

i am using IONICS BLOOM nutes i can't find the npk for them they were recommended by my local hydro shop as being good for a first grow as they are one part they are meant to be mixed at 7ml to a litre i have used it at 4ml per litre all the plants are fed at the same time and the same mix

mmclean3 · May 1, 2008

You have a calicum deficency my man.. i Noticed the red spots almost rust like. thats def calicum

kulan hunter · May 1, 2008

thanks mmclean3 i found my nutes npk, its ionic bloom npk of 4 5 8 i have not used any supplements and don't know what nutes are in it i.e baron magnesium ect

kulan hunter · May 1, 2008

i am going to try grotek's calmax or sensi cal mg mix bloom has anyone tried these which one would you suggest

TetraHyC · May 1, 2008

kulan hunter said:
help me please someone
also they are in soil cheap asda compost + 20% perlite
temp is 82 humidity is 50-55% (65% after watering)
i think the ph is about 6.0-6.5
i watered them today ( with nute 5ml per litre)then noticed the marks on the leaves just after
i watered them last 5 days ago (with same nute but at 3ml per litre )they were dry last night left watering till today

before that they had plain water for 2 weeks as they were transfered into bigger pots

How are you measuring the pH ??

kulan hunter · May 1, 2008

soil test kit from B&Q

TetraHyC · May 1, 2008

what about the water/nutes??

TetraHyC · May 1, 2008

If you don't have control of the pH its hard to do anything.

kulan hunter · May 1, 2008

i have no cf / ppm meter i am lucky to live in an area where the ph is constantly at 6.8-7.1 the nutes are ph balanced(ionic bloom npk 4 5 8 i will be buying ph testers this weekend as some of the supplements alter the ph

TetraHyC · May 1, 2008

Test the water run off when you get a tester.

You can get a 3 in 1 tester for $10 a wal-mart

kulan hunter · May 1, 2008

is that the ph moisture and light meter if so i have one its reads right in the middle on the line between red and green but it has no numbers on it i think it must be 7.0 but i have tested it in ph 4 and it moves very little on the scale so i don't have much faith in it, was going to buy a narrow and a wide chemical kit from local hydro shop, what should the water run off ph be at?

mmclean3 · May 1, 2008

What you wanna feed ur plant in soil is a water wit Ph 7.0 cause anything below that wont let the plant have good uptake of nutes...

kulan hunter · May 1, 2008

i have looked at the recommend ph level for watering with ionic nutes and it says 5.5 - 6.2 i was going to follow these instructions when i got the ph stuff and some cal/mg supplement and pk 13/14

ionics Ionic Instructions - Growth Technology

should i aim for a ph of 7.0 when i have made the nute mix up then?

the good news is that the problem has not got any worse today bottom leaves are a bit yellow but the rust pattern has not spread and the red stems seem to be fading back to green from stork to leaf

mmclean3 i looked at your journal and you have n/lights on the go i think these are also n/lights how long is the flowering on them?

Is This Magnesium deficiency? Please Help

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