Weird discolouration on leaves

flaiks

Well-Known Member

• Sep 15, 2013

• #1

I have a weird discolouration on the leaves of one of my seedlings, it seems to be in the early stages on some of the others.
I am using a drip feed system running for 15 mins every 6 hrs, under 2 400w mh @ 300w. Using half RO/half tap water, coming in at a base of 90PPM, and added ~100ppm of AN Sensi Grow A+B & AN B-52. Have not added any cal-mag. None of the threads here seem to match my issue, not sure whats going on with it, also, growth seems a bit slowed. Any ideas?

 

flaiks

Well-Known Member

• Sep 15, 2013

• #2

Noone has any idea ?

 

ElfoodStampo

Well-Known Member

• Sep 15, 2013

• #3

I've never used this system before,
I would use 100% r/o water and add the cal mag. run that for 4 days and see if you have any changes. It may be mag def. Or run your 50/50 with cal mag and see what happens.
Also do you know the pH of the water?

 

flaiks

Well-Known Member

• Sep 15, 2013

• #4

i ph'd at 5.8, i checked it though and after 2 days it went up to 6.8, I dropped in 2ml of ph down into the res and will check it again.

 

flaiks

Well-Known Member

• Sep 15, 2013

• #5

i should also note that the res is steady @ 69-71F

 

Dr. Who

Well-Known Member

• Sep 16, 2013

• #6

OK, , , Whats the Plant?
I've run THE DOCTOR from Green House and it has that same 2 tone coloring.......I've seen others with that too......I see no problems with the plant in the pic. !
Check your pH at lights on every day and adjust as needed to 5.8-6.2 and expect some pH swings....

 

flaiks

Well-Known Member

• Sep 17, 2013

• #7

I believe this one is Kalashnikova, ak47 white widow cross