4 weeks in flower, leaves brown spots

Jimdamick

Jimdamick

Well-Known Member
I would like to know what you are feeding your plant, as to my eye it could be a magnesium deficiency . Do you use supplements, like Cal Mag or kelp because a def in cal/mag usually shows up about that time. If the veins are yellowing, then it is a def probably, but if the spots are all over, check under the leaves at the brown spots for insects (use microscope) for insects/eggs. I think considering you only have 4 weeks approximately left until finish, you should be OK. Good luck.
 
bri77

bri77

Well-Known Member
Ok.

Medium : Clay Pebbles
Drip feed

Small root ball developing in res now
Res has an airstone.

PH 5.5 - 6.0

PPM 2.0

Water is 80 ppm from the tap
+ GH trio
+ CalMag+
 
bri77

bri77

Well-Known Member
Jimdamick said:
I would like to know what you are feeding your plant, as to my eye it could be a magnesium deficiency . Do you use supplements, like Cal Mag or kelp because a def in cal/mag usually shows up about that time. If the veins are yellowing, then it is a def probably, but if the spots are all over, check under the leaves at the brown spots for insects (use microscope) for insects/eggs. I think considering you only have 4 weeks approximately left until finish, you should be OK. Good luck.
Click to expand...
Thanks I'll check for insects
 
dtl420

dtl420

Well-Known Member
Looks kinda like calcium deficiency to me. How much calmag do you add per gallon? I wish my water was that clean, props to your water department.
 
bri77

bri77

Well-Known Member
my GH Micro is the Hard water version. I have Magne-Cal+ with contasins 3% N, so I'm worried I might give it too much. I only use a tiny bit of that. I recently doubled the about of light, now have the plant under 2 LED COB fixtures from northenlights.

Maybe with the increased light the plant needs more nutes?


edit:no sign of insects btw.
 
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