any ideas as to what?

bigbluegoo

bigbluegoo

Active Member
HELP!!!! hey guys got a problem here. I'm in the middle of the third week of flower and both my plants are showing the same thing. first things first.
600hps
4x4 tent
5 gallon smart pots
78 daytime temps
68/69 night time temps
ocean forest medium
fox farm trio nutes
6.7medium ph

so here's the deal. about five days ago I noticed the lower leaves starting to turn yellow and didn't think nothing of it, thought it would naturally do this. but every day it seemed to progress faster and faster. starts at the bottom of the plant and is working it's way up. the yellowing on the leaves start at the tips and fade in towards the stem. there are brown dots on the affected leaves but only on the veins. originally thought it was n lockout but checked the soil ph and it was fine. so then I thought it was nutrient lockout, I tested the runoff from wateringand had a ppm of 125 ( I feed at 600ppm) so I think I have ruled out nutrient lockout. I'm stumped!!!! anyone have any ideas? pictures below.
 

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Jimmy Sparkle

Jimmy Sparkle

Well-Known Member
Run off testing in "soil" is pointless and inaccurate. Bagged "soil," has natural buffers and p.h adjustments. Everything you mentioned that you use and grow in is almost entirely devoid of cal mag. Bose and cx2h are on it. Get cal mag.
 
bigbluegoo

bigbluegoo

Active Member
Jimmy Sparkle said:
Run off testing in "soil" is pointless and inaccurate. Bagged "soil," has natural buffers and p.h adjustments. Everything you mentioned that you use and grow in is almost entirely devoid of cal mag. Bose is on it. Get cal mag.
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thanks for the input. I'll definitely use cal mag from the start next grow.
 
Jimmy Sparkle

Jimmy Sparkle

Well-Known Member
Kasuti said:
I'm also using ffof and ff nutes. should I use a diluted solution of cal-mag or wait for signs of deficiency?
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I personally add it to my water every time I fertilize way before I see ANY symptoms. I would rather pre treat for an issue that I know is coming rather then try to get on top of it after it shows up. I don't use it diluted but I also don't use it foliarly
 
Kasuti

Kasuti

Well-Known Member
Jimmy Sparkle said:
I personally add it to my water every time I fertilize way before I see ANY symptoms. I would rather pre treat for an issue that I know is coming rather then try to get on top of it after it shows up. I don't use it diluted but I also don't use it foliarly
Click to expand...
Thanx for advice. Will start out using dilluted mix to begin with and then adjust as conditions dictate.
 
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