Nute Burn?

gunjamonster

gunjamonster

Well-Known Member
got this issue with auto flowering plants, they are in ff of soil , did give them a little big bloom from fox farm mixed in last watering , wouldnt think it would burn them ,but never know, anyone? started at top of plants at very tips of the top leafs and working its way in and some on bottom leafs , i did add one pic with leds on seems to show better with them on
 

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lio lacidem

lio lacidem

Well-Known Member
gunjamonster said:
got this issue with auto flowering plants, they are in ff of soil , did give them a little big bloom from fox farm mixed in last watering , wouldnt think it would burn them ,but never know, anyone? started at top of plants at very tips of the top leafs and working its way in and some on bottom leafs , i did add one pic with leds on seems to show better with them on
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What are your temps? What ppm big bloom did you feed? Whats your ph?
 
gunjamonster

gunjamonster

Well-Known Member
temps are probaly around 65 to 73 and the big bloom, i did as the bottle and feeding chart said 2 tsp per gallon of water and the ffof should be 6.5 to 7.0 only been in that soil for maybe 2 weeks, on a 18/6 schedule, had they leds pretty close to the plants not long ago also maybe 4 to 5 inchs away from plants, but raised them up when i saw the yellowing tips on top leafs thinking it could have been light burn dunno ?
 
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lio lacidem

lio lacidem

Well-Known Member
Well since you are saying the soil ph should be ill assume you dont check your ph at all. I would get a ph meter and check ph. There have been many threads on here with people having all sorts of ph problems in ffof.
 
gunjamonster

gunjamonster

Well-Known Member
yeah i have a ph meter but i dont trust it , it reads 7.0 no matter where a put it, its one of those from home depot ,but i have a ph soil test kit gonna test it in few with it
 
lio lacidem

lio lacidem

Well-Known Member
7.0 is slightly high in soil I run 6.5-6.8. That being said its not to out of whack. I would cut back on those nutes. After a few times of only water.
 
gunjamonster

gunjamonster

Well-Known Member
ok and thx for the input , whats something i can bring ph down a bit with that i may have around the house? also i just tested for nitrogen and from looks of the color i got and the chart it may be low , what you think?
 

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gunjamonster

gunjamonster

Well-Known Member
from what i seen on chart of nitrogen def starts from tips and goes in maybe lacking nitrogen? dont really see how when ffof says will feed up to a couple weeks straight outta bag
 
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Blitz35

Well-Known Member
Its definitely not nitrogen! Nitrogen will always start at the bottom of the plant and when leaves yellow, they yellow uniformly, all at once, not from the edges. That may be light/heat burn. 4-5 inches is pretty close for an led. What kind of led? how strong are the led's?
 
gunjamonster

gunjamonster

Well-Known Member
did you see the nitrogen test results above looked like it was low. i have a 300 watt and this one >>

Brand:
Mars Hydro
Noise Level: 56 DB MPN:
Mars Hydro Reflector 48 LED Grow Light Panel Lamp
Heat Level: 409 BTU Wattage: 99W
View Angle of Leds: 90°/120° Mixed Power Consumption: 99W@110v; 96W@220v
Product Dimensions: 12 x 10 x 3 inches Replaces HPS HID: 150 watt
Product Weight: 5.47lbs / 2.48KG Lumen: 4523 lumen
Warranty: 2-year manufacturer warranty. We are factory Par: 477 μmols at 18''
Safety: ETL/CE/RoHS certified. No risk of fire or burning Coverage Area: 1.5'×1.5' = 45cm × 45cm
Shipping: US/Canada/DE/UK/AU Stock. No custom tax Spectrum: Full spectrum. Colors of red, blue, white, IR
 
B

Blitz35

Well-Known Member
gunjamonster said:
did you see the nitrogen test results above looked like it was low. i have a 300 watt and this one >>

Brand:
Mars Hydro
Noise Level: 56 DB MPN:
Mars Hydro Reflector 48 LED Grow Light Panel Lamp
Heat Level: 409 BTU Wattage: 99W
View Angle of Leds: 90°/120° Mixed Power Consumption: 99W@110v; 96W@220v
Product Dimensions: 12 x 10 x 3 inches Replaces HPS HID: 150 watt
Product Weight: 5.47lbs / 2.48KG Lumen: 4523 lumen
Warranty: 2-year manufacturer warranty. We are factory Par: 477 μmols at 18''
Safety: ETL/CE/RoHS certified. No risk of fire or burning Coverage Area: 1.5'×1.5' = 45cm × 45cm
Shipping: US/Canada/DE/UK/AU Stock. No custom tax Spectrum: Full spectrum. Colors of red, blue, white, IR
Click to expand...
From what I see in that pic it looks to be close to 'medium' nitrogen. At 3 weeks old, that's enough nitrogen. I can for sure say that those pics of the leaves do not show a nitrogen deficiency at all! Nitrogen is a mobile element and will always go to where its needed most, the upper leaves, thus yellowing can never start at the top with a nitrogen def. Also the leaf doesn't yellow in that manner with nitrogen lacking, the entire leaf will yellow the same, evenly, not from the edges in like that.
 
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