is this Phosphorus Def?

Greetings,

Frist off this is a Medical grow and my frist, im currently 3 weeks into 12/12 on some nirvana Master Kush using AN 3 part. big bud. bud candy and molassas 3gal Pots with roots Organic soil and 250w hortilux. I think this is Phosphorus Def but Unsure.
if you need anymore info Just ask and thanks for any help

Cheers
Zheol

P.s. RIU rocks ^^

how much you watering?
could be nitrogen def

Phosphorus is usually demonstrated by red stems and leaves.

looks more like Mag deficiency. Do you have hard water? Cal mag will make a world of difference.. worth the $15 bucks IMO.

my Tap Ranges from 35-180 ppm. i did add 2 tablespoons of dolomite lime to the soil when i transplanted, i have a bottle of Cal Mag from a General organics Sample Pack i got not to long ago i can use that if need be, so you think it looks more like Mag Huh with the dolomite would it be better to get some eposom salts to just add mag so i dont lock shit out with a Cal over dose?

hellraizer30 said:

how much you watering?
could be nitrogen def

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i water 2 times a week 2l per water. i Flushed this girl last Night also after i seen that then Watered with 1 step below half str nutes i was on 1/4 which is 4ml so this step was 6ml

have you checked your runoff ph? it can really make a difference. some soils have trouble keeping stable after alot of nutrients have been used, how often do you flush? you could flush and follow with a really mild nute mix and let it return to normal living enviroment and see if it improves.

iv just found my happy frog soil is not so happy, after just plain glacier. water ph'd at 6.5, the runoff was around 5.8!...


*edit* man it took me way to long to type that out lol, you just posted my answer

PPM doesn't tell you how much Magnesium you have in your water.

I'm not a soil guy.. I grow hydro.. so it may be different.. but isn't lime just a ph buffer? has nothing to do with calcium or magnesium.

You can try adding epsom salts.. I didn't find that it helped me.. but once I started adding cal mag and H2o2 pretty much ALL my problems went away. I'm not sure which was which, but I had tons of air in my reses.. Give it a shot with your sample pack. also remember that it takes 3-4 days for a plant to show a result to what you do to it. So if you over nute it.. it will show burn in 3-4 days.. if you start to correct mag deficiency... the new growth is what will show as normal.

Dolimite Has Cal and Mag In it and can be used for that as well as PH Buffer it has a Nutral PH of 7 and my PH of run off was 6.7 which is not bad and this is my frist Real Flush laste "Flush" i Just ran 1.5 Gallons instead of like 5-6

Zheol said:

Dolimite Has Cal and Mag In it and can be used for that as well as PH Buffer it has a Nutral PH of 7 and my PH of run off was 6.7 which is not bad and this is my frist Real Flush laste "Flush" i Just ran 1.5 Gallons instead of like 5-6

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3 weeks in, the dolo is just starting to kick in. I've run short of Mg early on till the dolo really started to break down and work.

Try 1tsp/gallon of water of the epsom salts, use the whole gallon then wait and see. If it's Mg, the plant should respond in less than a week. Just hold off on the nutes for that time, water only.

Wet

Cool thanks for all the replys I'll go grab some epsom salt tomarrow. Should I not wait till this flush drys out a bit it's still wet not damp

Go ahead and add it now, then allow to dry.

Won't hurt anything as long as you don't keep watering it and allow it to dry.

Wet