Help me diagnose this leaf

Usernamewastaken

Well-Known Member

• Mar 25, 2013

• #1

Just started week six. Flipped from 24/7 to 12/12 last night. Just did sledgehammer on Saturday.

fox farm notes. Sunshine advance mix #4.

This is only effecting one plan and on 4-5 leaves

any and all help is really appreciated..

 

fattiemcnuggins

Well-Known Member

• Mar 25, 2013

• #2

mag deficiency

 

Usernamewastaken

Well-Known Member

• Mar 25, 2013

• #3

Thanks fattie...

When I started the grow I started with distiller water and wasn't adding any cal mag. I have since started giving cal mag but this one plant is showing the above signs...

i was giving 2 tsp per gallon of cal mag since that is what is suggested for accelerated dosages.

any advice on how long I should keep up with this dosage? Should I dial back to 1 tsp per gallon since I am now using tap or since I am now using tap water should I discontinue cal mag dosages?

 

st0wandgrow

Well-Known Member

• Mar 25, 2013

• #4

I had a similar looking deficiency a while back and a RIU member here suggested using epsom salts to treat it. The problem disappeared in about 10 days. I believe epsom salts address the mag problem as fattie mentioned above. I do not recall how much I used then, but I add a tablespoon to a 5 gal bucket now as part of my regular feedings.

 

fattiemcnuggins

Well-Known Member

• Mar 25, 2013

• #5

Good questions..my tap here is slightly hard and I still add a little here and there. I would just dial it back and use sparingly. The areas that are brown can't go back to green, but you can prevent the problem from getting worse.

 

st0wandgrow

Well-Known Member

• Mar 25, 2013

• #6

 

Usernamewastaken

Well-Known Member

• Mar 25, 2013

• #7

Thanks gents... Looks like the next google search I do is "cannabis Epsom salt" to get a bit more edumacated on dosages...

Thanks!

 

stumpjumper

Well-Known Member

• Mar 26, 2013

• #8

I feel ya, I switched soils from FoxFarm to this soil that Great Lakes Green is selling and I have to say, this is the worst grow I've ever had as far as deficiencys go.. I liked the soil at first but I am going back to FF and not looking back..