About half a year ago, I began to learn farming by using the hydroponic method. This method is a method of cultivating plants without soil. Water supplied nutrients into the planting medium. Initially, I tried the simplest method of hydroponics,the wick system. In this system, the nutrition water flowed through the principle of  capillarity. I've tried to plant lettuce, pokchoy, and chili using this system.

I use a plastic container to hold nutrients water and using styrofoam sheets as well as the retaining cap so that the net pots not get into the water.  Wick system scheme that I use can be seen in the picture below.

Planting process with this system is quite easy. Lettuce seeds sown in rockwool measured 3x3x3 cm. Rockwool is made from heated pumice , then made to resemble the fibers. Rockwool must be kept wet. Do not forget to put the seed in a place exposed to direct sunlight so that the seeds grow well. After 7-10 days and have 3-4 leaves, the plants can be transferred into a wick system that has been filled with  nutrients water. The treatment is very easy to do next. I just churning the water in the container every day. The goal is that the water that is in a container that has enough oxygen to support plant growth.

Both types of lettuce is quite resistant to hot air in this place ranging 35-36 degrees celcius. Red lettuce will appear dark red when exposed to direct sun light with high intensity. I been puts them in place that is not too much sunlight and evidently the color of the leaves are not predominantly red.

Red lettuce rapid and grand rapid that there is at the top of this article was about 18 days after planting. Look fresh and interesting to be harvested soon. But I still have to be patient about 12 days left until ready to harvest size. In general, lettuce type is used as a salad ingredient.