What causes the edges to turn colors like this?
- Thread starter BonesBuds
- Start date
StoneDHedgE
Well-Known Member
Genetics maybe. Got OG in it? Grown this strain before without this issue? Plant looks healthy.
Hugo Phurst
Well-Known Member
A little too much N maybe.
Cpappa27
Well-Known Member
I second this. Just looks like you pushed your nutrients to the max, I think you're doing fine. Just a little less nitrogen next feeding and you'll be good to go.
BonesBuds
Active Member
I'll cut back on the N and monitor for light damage as well. These lights have burned plants in the past but I keep them a respectable distance from the canopy (3 feet for the shorter plants, only 2 feet for the taller sativa).
Aquarium water is also packed full of nitrogen, so I'll avoid using it next watering, but boost P and K.
Aquarium water is also packed full of nitrogen, so I'll avoid using it next watering, but boost P and K.
ALPHA.GanjaGuy
Well-Known Member
Can we see a better picture, full plant. I agree the darkness of the leaves is likely nitrogen toxicity but that does not explain the yellowing edges
which light are you using?
which light are you using?
hotrodharley
Well-Known Member
Beginning potassium deficiency deficiency. Possibly locked out because of high nitrogen and nitrates from the fish shit combined with extra fertilizer.
BonesBuds
Active Member
The light I'm using is powerful: https://www.kindledgrowlights.com/products/spectrum-led-grow-light
Its a solid product, just a bit overkill in terms of power.
Currently I'm running at 100% light and UV power, and was advised that my tent temp should be in the low 80s to ensure the plants need the full amount of light this system provides. I'll turn down the power next week (start of week 7 of flower phase).
This increases the need for nutrients and extra water too given how quickly they dry out at that temp.
Jjgrow420
Well-Known Member
Do you feed your fish with food that is food grade or 'fit for human consumption?'. Ever look at what's in those commercially available fish foods? They don't even have regulations for ornamental fish. The food could contain literally anything including (but not limited to) heavy metals, antibiotics, vermicides, filler (who knows what that is even), medicine, 'color boosters' (chemicals), enzymes, etc.
The ONLY way I'd ever use aquarium water to water plants I would be consuming in any form would be if I bought special food meant for aquaponics for human consumption. Otherwise, it can go in the flower boxes and hanging baskets, or down the drain.
The ONLY way I'd ever use aquarium water to water plants I would be consuming in any form would be if I bought special food meant for aquaponics for human consumption. Otherwise, it can go in the flower boxes and hanging baskets, or down the drain.
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ALPHA.GanjaGuy
Well-Known Member
nice light but 420w is not really that crazy powerful, I run a 450w, I don't think it's the light causing this especially with the distance you mentioned earlier
PopAndSonGrows
Well-Known Member
Potassium lockout or deficiency
BonesBuds
Active Member
Fish crap and piss gold... try it because plants love it.
No doubt there are concerns, lessons to be learned with fish water.
I'm religious about changing my aquarium water once a week... we feed our fish a mix of store bought food and some organic veggies (green beans). Our larger plecco fish love veggies and quickly convert it into liquid gold.
I've had my water tested a few times. Its high in N and potassium in particular. But that's in relation with fish... for plants its a watered down version of fertilizer.
I use a mix of water types over time and add small measures of fert that's appropriate for the plant.
However, there is much to learn in this area. Is their a board dedicated to fish poop?
Thanks all!
BonesBuds
Active Member
I actually have multiple changes on going on multiple plants,
Is this normal color change or a deficiency in my sativa and shorter indica plant?
