Installing a sump on small closed hydroponic systems is also easy. The same basic concrete sump can be build but a simple ‘T-piece’ as described in the figure below can also be as effective. However, floating particles in the water will not be removed with this method. The water in the ‘inline sump’ must not move too fast. Install a T-piece that is set at an angle in the direction of the water flow. This will further increase the efficiency of the ‘inline sump’. A “U” shaped section can also be installed in line with a gate valve at the bottom to remove sediment.
I studied agriculture at the University of Stellenbosch in South Africa in 1984 and completing my M.Sc Agric. in 1998. . My love for "Controlled Environmental Agriculture" (CEA), started in my third year when I was exposed to the Welgevallen Research Station. There Prof. P.C.Maree showed us what hydroponics consisted of. It was awesome. There were no large tractors involved, no dusty fields, no uncontrollable storms to destroy your crop (well that is what I thought). Since then I put hydroponics to much better use, not just farming. We solved pollution problems by cleaning mines effluent with hydroponics and aquaculture. They were used to remove toxic metals to produce clean water (which we sold and make more money of than the produce). What I learned from 1987 I tried to compile in this website and I hope it is from some value to the serious commercial farmer that wants to take the journey into Commercial Hydroponic Farming.
Lettuce was cultivated in 4500 B.C. in the Mediterranean basin. Only in 1543 was the