ChiefX
12-21-2005, 09:26 PM
Hey guys, first timer, so things are a little confusing to me.
I'm currently just growing one female in a soil medium, under one 400w HPS, thats been flowering for about four weeks now. Up until about eight days ago, it was looking realy pretty, leaves pointed up towards the light, doing just fine. I watered the plant with half a galon Poland Spring, mixed with a MG Rose Fertilizer (soemthing like 16-24-18, i dont have it handy). I started noticing yellowing and necrotic parts of lower leaves, some brittle to the touch - rub between your fingers and they disintegrate.
I moved the light futher away, another six incehs or so, just to make sure they were staying cool enough. Ventilation isn't a problem, as my grow is in a closet and I have an exterior ceiling fan running constantly, although I have a thin tapestry normally covering three quarters way down the closet door, and the temperature can rise in there a bit. Still, it didn't seem it was the heat.
I started to think possible N or K defficency, as prior to the fertilization I mentioned, I had only fertilized once with about half a galon of same fertilizer mix, about three or so weeks into vegetation. So I souped up a half galon water with a double strength fert of same stuff, just a couple days later.
Since then, things have continued their downslope. Many lower fan leaves have continued deterioration. Upper leaves now, around the perimeter of the leaves (at the edges), are turning yellow, and the tips of the leaves kind of curl down and then up right at the point, and are thinning and turning brown. It seems the plant has stalled in vertical growth, as I haven't seen it shoow up an inch or a couple overnight as I have occasionally in the past few weeks. I'm pretty sure flowering has slowed down too.
Well, it's kind of difficult to tell from pictures I'm looking at on the web. Over at the overgrow.com faqs, they ahve pics of heat stress the show damage to fan leaves similar to mine at the top, but it doesn't explain the lower elaf deterioration. Nonetheless, I raised the light another six inces or so yesterday. On advice of a friend who's had some experience I flushed the container today with five gallons of straight water -- he sasy it could be nutrient burn/overfert.
So I'm just wondering if I did the right thing, and if there's anything else I can/should do to get my girl back on track. Any comments would be appreciated.
Oh, the soil I started out with was a MG slow release formula, I don't remember the nutrient content however.
I'm currently just growing one female in a soil medium, under one 400w HPS, thats been flowering for about four weeks now. Up until about eight days ago, it was looking realy pretty, leaves pointed up towards the light, doing just fine. I watered the plant with half a galon Poland Spring, mixed with a MG Rose Fertilizer (soemthing like 16-24-18, i dont have it handy). I started noticing yellowing and necrotic parts of lower leaves, some brittle to the touch - rub between your fingers and they disintegrate.
I moved the light futher away, another six incehs or so, just to make sure they were staying cool enough. Ventilation isn't a problem, as my grow is in a closet and I have an exterior ceiling fan running constantly, although I have a thin tapestry normally covering three quarters way down the closet door, and the temperature can rise in there a bit. Still, it didn't seem it was the heat.
I started to think possible N or K defficency, as prior to the fertilization I mentioned, I had only fertilized once with about half a galon of same fertilizer mix, about three or so weeks into vegetation. So I souped up a half galon water with a double strength fert of same stuff, just a couple days later.
Since then, things have continued their downslope. Many lower fan leaves have continued deterioration. Upper leaves now, around the perimeter of the leaves (at the edges), are turning yellow, and the tips of the leaves kind of curl down and then up right at the point, and are thinning and turning brown. It seems the plant has stalled in vertical growth, as I haven't seen it shoow up an inch or a couple overnight as I have occasionally in the past few weeks. I'm pretty sure flowering has slowed down too.
Well, it's kind of difficult to tell from pictures I'm looking at on the web. Over at the overgrow.com faqs, they ahve pics of heat stress the show damage to fan leaves similar to mine at the top, but it doesn't explain the lower elaf deterioration. Nonetheless, I raised the light another six inces or so yesterday. On advice of a friend who's had some experience I flushed the container today with five gallons of straight water -- he sasy it could be nutrient burn/overfert.
So I'm just wondering if I did the right thing, and if there's anything else I can/should do to get my girl back on track. Any comments would be appreciated.
Oh, the soil I started out with was a MG slow release formula, I don't remember the nutrient content however.