6 weeks (1 week flower) cfl grow

Discussion in 'Micro Grows' started by pure1, Jun 21, 2012.

  1. It is 6 100w eqv 2700k lights. Only flowered with these lights for 2 days, was using 5700k ones for 5.

    Only thing is im getting these black burnt tips on the end, and a curling down to my leaves. My ph on one is 6.0 (i flushed it with distilled water 7.0 ph about 5 hours ago) And the other is 5.3, which is one that hasn't been flushed yet cause I transplanted it recently and don't want too much stress on it.

    Does anyone know what these black tips mean? And are these female? those look like hairs to me, not leaves.

    I know these should be bigger, but i've had many problems, and a lot of stunted growth. I'm purchasing a 600w hps/mh setup, can't wait :)

    BTW: The dark spots on the leaves you see are dirt from transplant, iwas not able to wash them off in time (had people coming over)

    Thank you for any opinions or comments or tips, please give any criticism you see, hurt my feelings :p

    :smoke:
     

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  2. Oh yeah, one more question.

    How can I raise humidity in my room? I actually cracked a leaf from bending it while misting underneath the leaves today.

    I had to deal with heat before, so i use an A/C. Problem is the A/C takes out all the humidity, how do I increase humidity in there without taking the A/C out?

    Thank you
     

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  3. and it's kinda urgent, my leaves are able to snap right in half if i fold them over, way to dry
     
  4. I would just use a fan and only flip the AC on if it gets 85+ in there. The AC also takes away the humidity so you want to be able to leave the humidity and keep it a good temp. I normally constantly have a jar of water in my grow setup for humidity. Just stay patient but keep checking it and keep it a nice temp W/O draining your humidity out. Good Luck!
     
  5. Thank you.

    and i checked this morning while the lights were off, i misted inside freezer bags, and on the plant and put the bag over the pot. They are much more moist, and don't feel so dry, and they're actually perking up! With no light! humidity was my main problem i think..
     
  6. any other idea on the black tips?
     
  7. nice, props on the 2 babies:smoke:
     
  8. It's called interveinal chlorosis.
    The leafs also yellow, you need to flush them to a good ph.

    Clip the tips and you should be fine, if a lot of yellowing comes on then flush again and find your issue :)
     
  9. Quite often I hear groans from folks having leaf problems -> “Help, my leaves are cupping and the leaf edges are turning brown!”, or, “My plant's leaf tips are curling down and turning black ....what's wrong?” Unless insect damage has occurred or the plant is suffering from a severe case of calcium deficiency, the plant is trying to tell you that it is water stressed. It's hard to tell *exactly* what the culprit is, and unfortunately the “solution” the grower chooses many times is not the right one. A mis-diagnosis only serves to make matters worse by promoting further decline. I’ll try to cover some of the more common causes that can induce these common symptoms and try to offer a few simple solutions. The ultimate and correct solution is in the hands of the grower.

    1. Over-fertilizing - the most common cause of leaf cupping aka leaf margin rolling, leaf margin burn, and leaf tip curl/burn is the overzealous use of too much plant food in relationship to factors such as plant vigor and rate of growth. The first unit of a plant to show moisture stress is the leaf at its margins and/or tips, reflected by margin rolling (cupping) or burning. A hard, crispy feel to the leaf frequently occurs as well, as opposed to a soft and cool feel of a happy leaf. When you have a high concentration of salts in solution (in the root medium) compared to the salinity levels found in the plant’s tissue, water is actually drawn out of the plant across the root gradient in order to fix the ppm imbalance. IOW, this is a natural, osmotic response that serves to equalize salinity levels on both sides of the root’s epidermal gradient. Back off on the amount and/or frequency of plant food. Too much plant food can also burn the roots, especially the sensitive root tips, which then creates another set of problems. Note - as soil dries, the concentration of the remaining salts rises further exacerbating the problem.

    2. High Heat - the plant is losing water via it’s leaves faster than what can be replaced by the root system. The leaf responds by leaf margin cupping or rolling up or down (most times up) in order to conserve moisture. A good example is reflected by the appearance of broad-bladed turf grass on a hot summer day, high noon, with low soil moisture levels - the leaf blade will roll upward/inward with the grass taking on a dull, greyish-green appearance. Upon sunrise when moisture levels have returned to normal, the leaf blade will be flat. Lower the heat and concentrate on developing a large, robust root system by practicing sound plant culture. An efficient and effective root system will go a long way to prevent heat induced leaf dessication and leaf margin curling. One short episode of high heat is enough to permanently disable or destroy leaf tissue and cause a general decline in the leaves affected, which often occurs to leaves found at the top of the plant. The damaged leaf (usually) does not fully recover, no matter what you do. Bummer in the summer. One can only look to new growth for indications that the problem has been corrected.

    3. High Light - yes, it’s true, you can give our faves too much light. Cannabis does not receive full sun from sunrise to sunset in its natural state. It is shaded or given reduced light levels because of adjacent plant material, cloudy conditions, rain, dust, twilight periods in the morning and late afternoon, and light intensity changes caused by a change in the seasons. Too much light mainly serves to bleach out and destroy chlorophyll as opposed to causing leaf cupping, but it often goes hand-in-hand with high heat for indoor growers. Again, back off on the light and concentrate on developing/maintaining an efficient and robust root system.

    4. Overwatering - for those doing soil, this practice only serves to weaken the root system by depriving the roots of proper gas exchange. IOW, the roots are not getting enough oxygen which creates an anerobic condition inducing root rot and root decline with the end result showing up as leaf stress, stunted growth, and in severe cases, death. <gasp!> Overwatering creates a perfect environment for damp-off disease, at, or below the soil line. Alot of times folks think the plant is not getting enough plant food (which it can't under such adverse conditions), they add more nutes for a "curative", and just add insult to injury.

    5. Underwatering - not only is the plant now stressed due to a low supply of adequate moisture, but carbohydrate production has been greatly compromised (screwed up). Step up the watering frequency, and if need be, organic growers may need to water from the bottom up until moisture levels reach a norm throughout the medium. If the pot feels light to the lift - it’s time to water. Don’t wait until the soil pulls away from the sides of the pot or leaves droop before you water. And of course, leach once in a while to get rid of excess salts.

    All of the above issues relate to a plant's internal cell turgor or cell water pressure. If water pressure within the plant's stem and leaf cells are positive, the plant will look strong and stocky with flat leaves that are cool to the touch due to good transpiration from the leaf surface. By the same token, if the water pressure is not up to par, whereby water is being extracted from the plant and not replenished like it should be.... the leaves and/or stems will droop.
     
  10. Thanks DJSID666 that helped me out with some things too!
     

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