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Wavey Leaves under T5 Light - My Theory

Flockshot

Flockshot

New member
I enjoy spending time with my seedlings and watching closely how they grow.

The leaves on some of the plants have got significant waves in them so I am wondering why.

My light is a T5 - 8 blub (total 400 W) with 7 white and 1 pink bulb. My growing conditions are very good right now with 6.0 PH, 72F, 60% RH.

If you were to lay on your back and look up at a T5, with the mirrored reflector, you will be looking at a wide ranging array of very bright and light sources coming at many different angles, as opposed to a single light source like a MH bulb.

My theory is that as the leaf adjusts to the 'best' source of light, different parts of the same leaf are choosing different 'best' sources and turning to get the best angle from the light. This is causing different parts of the leaf to try and turn toward different "best" light, making it wavy.

What is your opinion?
 
I don't think that's it. Check out the week 5 thread by puravida c. He's using 14 CFLs all around a grow box and his leaves are straight outwards perky and healthy
 
That's my point. His lights are more like flood light and the mirrors on the T5 seem to concentrate light like a mirror. The light from the bulb is 'soft' but reflecting around those rounded mirrors create hot spots, is my theory. I may be very wrong and I am not disputing what you say. I am just offering further explanation of what I was saying.
 
Arite I see what you mean. Instead of dispersing the light your hood is like a mirror. A photo of the plant and the light setup would educate my guess but you shouldn't be having issues with fluorescent light
 
Gotta agree with 9fingerleafs unless leaves are touching your lights. Mine are about 3 to 4 inches away. My "overhead" light is 4-42w CFL's. I used a 4 way splitter and mounted it in an aluminum mixing bowl for a reflector. The mixing bowl has a mirror finish and I haven't noticed any hot spots. One thing I have learned this grow is PH issues can show many forms. I was unaware that store bought soil can have a PH that is off and needs to be adjusted before you start a grow. It can be adjusted after you start, like I did, but next grow I will check soil before starting. Check the PH of your run off so you can at least mark that off your list of possible causes. Good luck!
 
CONCLUSION;
My theory is crap.
What I was seeing is the very beginning of a calcium deficiency, so whey your leaves start to twist and 'bow string' the calcium deficiency spots may be just around the corner.
 
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