Look at my plants I'm not sure what's wrong nutrient problem?

[monkeygrow636]

Plant 1

Plant 2

Plant 3

Plant 4

Plant 5

Plant 6

So my leaves have been changing and I'm worried when i get into flower It will be a mess like it has the last 2 grows. I'm very worried of over fertilizing so I try and take a less is more. They are 5 gallon pots organic grow. Peat moss 60% volcanic pumice 30% 10% compost/worm casting and I sprinkle in some other stuff Kelp meal, Fish bone, Gpsym I'm light with it though. Anyone know what these plants need? Past 2 waterings I have used Neptunes harvest Flowing one 2-6-4. But I'm ready for a top dressing. I have 7 more plants I'll make a 2nd post here and include them. I'm also on well water Ph is 7ish I sometimes ph down to 6.2-6.5. I was battling and still am fungal gnats. it hasn't gotten to crazy I am drenching with Neem Seed Meal and BT also have some benificial insects in there Rove beats and something else forgot the name. I hope to finish them soon.

Thank you

 

[monkeygrow636]

Plant 7

Plant 8

Plant 9

Plant 10

Plant 11

 

[cat shit]

Plant 1
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Plant 2
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Plant 3
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Plant 4
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Plant 5
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Plant 6
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So my leaves have been changing and I'm worried when i get into flower It will be a mess like it has the last 2 grows. I'm very worried of over fertilizing so I try and take a less is more. They are 5 gallon pots organic grow. Peat moss 60% volcanic pumice 30% 10% compost/worm casting and I sprinkle in some other stuff Kelp meal, Fish bone, Gpsym I'm light with it though. Anyone know what these plants need? Past 2 waterings I have used Neptunes harvest Flowing one 2-6-4. But I'm ready for a top dressing. I have 7 more plants I'll make a 2nd post here and include them. I'm also on well water Ph is 7ish I sometimes ph down to 6.2-6.5. I was battling and still am fungal gnats. it hasn't gotten to crazy I am drenching with Neem Seed Meal and BT also have some benificial insects in there Rove beats and something else forgot the name. I hope to finish them soon.

Thank you

Iooks like magnesium deficiency may e a bit of nitrogen to? I grow in a peat based medium and I let ph drift in between 5.8 and 6.2 maybe ph issue but I'm no expert. I mainly grow autos so when plants start flowering at week 5 or 6 they get real hungry for magnesium, I add 50 to 75 ppm of epsom to my feeds which keeps them happy throughout most of my grows. You say you've been light on the feeds that is most likely your issue, good luck

 

[7CardBud]

Your mix is very low on nutrient rich material.
It's also missing dolomite, which is a key ingredient and may be a reason for the
lack of magnesium in your plants.