Too Much Or Too Little??

  • Thread starter Grow hobby
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Grow hobby

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Im an inexperienced hobby grower, could someone please help me identify the problem with a couple of my plants. I'm sure I'm using too much or too little of something.
 
Too much or too little
G

Grow hobby

9
3
There are a few more leaves showing the same spots. This would have come from closer to the bottom of the plant. The plant is about 2 months old, getting ready to flip to flower. Growing in Fox Farm Ocean Forest Soil and using Fox Farm nutrients and CalMag Plus, ph 6.5. 600 watt MH bulb in a cooled fixture, 4x4 grow tent, temp when light is on is approx. 78 with night temp of 70-72. plants are about 16 inches from light with no heat damage showing at the top of the plants.
 
GT21

GT21

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Grow hobby said:
There are a few more leaves showing the same spots. This would have come from closer to the bottom of the plant. The plant is about 2 months old, getting ready to flip to flower. Growing in Fox Farm Ocean Forest Soil and using Fox Farm nutrients and CalMag Plus, ph 6.5. 600 watt MH bulb in a cooled fixture, 4x4 grow tent, temp when light is on is approx. 78 with night temp of 70-72. plants are about 16 inches from light with no heat damage showing at the top of the plants.
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Too much... lay off the cal mag too
 
S

Slownickel

78
33
Stop guessing and send in a soil sample. Realize you can learn more from errors than you can from success. Dial it in with a good soil analysis and then post it. I recommend spectrumanalytic, the K-2 procedures.
 
GT21

GT21

I like soup
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10,114
438
Slownickel said:
Stop guessing and send in a soil sample. Realize you can learn more from errors than you can from success. Dial it in with a good soil analysis and then post it. I recommend spectrumanalytic, the K-2 procedures.
Click to expand...
Thats a little overboard when youre using ffof... just water for 30 days(ph 6.5-6.8).. Add pk when you flower. And you can even reuse ffof several times
 
Purpletrain

Purpletrain

810
143
Typical early stages of phos defiency
Check your soil ph make sure its in the 6.8 - 7.0 mark
Bone meal and rock phosphate are typical sources. rock being slow acting
If you can find them, fish bone meal and soy husks are other good sources. And then there is compost :) Composted yard waste and manures generally provide all the phosphorus normally required by most plants in most soils .
You could even add 1 cup of milk with each watering to boost everything up or a can of stale coke a cola has lots of phos in it

But your issues are either ph locking out or soil is depleted of phos​
 
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