What's your pH? How often are you flooding and draining? Only new leaves? I have a chili plant that actually started turning yellow when I adjusted the ph down, it was deep green before and started to yellow over a week's time. I figured that meant I pushed it too quickly and backed off the acid. Wood chips sure sound like they would change the pH (sap can be acidic.) How's the Cal-Mg? I haven't needed a lot but the leaf growth rate went up when I added small amounts (teaspoon per 5 gallons.) Any change in light?

I don't know the pH level but I have the ppm meter that shown 1260. And the ec is showing 2.5. I read some articles about the wood chip being used for media.

Since I'm a newbie, I washed and drain the media (wood chip) 4 times, but the drain water from the wood chip is still a little dark.

I flooded and drain 4 times a day and start to reduce to 3 times a day.

The cal-mg I'm not really here is my mixture of nutrient. 200 liter of water + 100 gr of NPK (15/15/15) + 100 gr of N+ 100 gr of K + 50gr of micro nutrient. I've adjust the ppm to around 1100 to 1200.

The reservoir is 220lt capacity. My setup is 8" of rain gutter 20 meters long. From expert I heard the roots of hot Chilli peppers grows a lot. That's why I choose the big rain gutter as the setup.

Since my area have lots of pest, I've decided to build a simple green house,

We have a hot climate here, my green house temperature is showing 33 degree Celsius.

To reduce the temperature I've install paranet above the green house. (I'll post the pic later on) .

A picture would be of great help

Dear chuckwagon009, I'll try to take as many picture as I can later, but can u specify what picture would u need,

Thanks

How damp is the chips staying?

PH is absolutely critical in any hydro grow. Peppers are probably the easiest of the vegetables to grow. Check out this link.

http://www.simplyhydro.com/ph.htm

Wood chip are a decent medium, but they can change your PH and can contain organisms that may be detrimental to your plant. Consider a more neutral medium such as hydroton.

Your plants look like an iron deficiency which could be caused by a combination of a bunch of different things. Overwatering, too much phosphorus causing lockout, nutrients lacking micro's, Calcium toxicity, and root rot.