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The silver overhead covering is a Scrim Foil type of product. I have used it before and it's super durable. It seems counter intuitive to block the downward rays of the sun, but i have found that certain vegatables seem to prefer it, plus lowering the water temperature is very important."Romaines of the day," It still amazes me the size of a Romaine seed and the end result. Crisp and tasty! Thank you Romaine!Left: Shiso. Right:Trough is almost there on the lava rock instalation.The black hose in the foreground is conected to the water pump below and will be cut and lay in snug below the rock. Sizing the rafts is next then covering the system with insect netting will be after that.#aquaponicsassociation #aquaculture #hydroponics #restaurante #organicrestaurant #santabarbaraHappy Forth of July!! What is this picture? Left, red lava rock hauled in by yours truly via truck, dolly, and five gallon buckets. How this works. Water comes into the rock from the reservoir below via submersible pumps. Right, The Bell Siphon, in the picture that you see is called, The Bell-Siphon Housing. Water rises in the trough to almost the top of the Bell-Siphon Housing. On the inside of the Bell-Siphon Housing water is slowly being pressurised and a Vacuum is being created inside the Bell-Siphon Housing. Water pressure rising within the Bell-Housing finally has nowhere to go and the two inch stand pipe sticking up inside the Bell-Housing is the only exit point. The water then begins flowing down the stand pipe slowly at first then as the chamber in the Bell-Housing fills with more and more water, there is no more air gap and the siphoning action takes place with great veracity. The water cascades down the stand pipe past the bulk head, past the ninety degree angle pvc pipe below the trough and finally exits to the lowest pressure point that is the reservoir below. Think log ride at Disney Land. The cycle then repeats. This is why Aquaponics is primarily called a closed loop system.Testing out a double header bell siphon out flow system. I stuck a couple of 2" net pots on the ends for good measure. These break up the water on the out flow rather like a waterfall adding aeration. I am doing a two pump setup. One pump at each end of the reservoir. The water seen in this picture will be pushing the flow of water to the pumps via this double headed setup.Taking shape. Lumber prices have gone through the roof. I am so glad i stock piled a bunch of stuff. So far good.
