Submersible Water Pumps are used to circulate nutrient-rich water in NFT and other hydroponic systems.
How to choose your pump.
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Submersible water pumps are just electromagnets. The coil is in the main body, and the impeller shaft has a magnet. Water can get in-between the impeller shaft and main body, and it acts like a lubricant. There are just a few basic parts, the main body, the impeller and shaft, the flow restrictor, impeller cover, and inlet opening cover. It can be taken all apart and cleaned. You should get used cleaning the pump regularly. It’s easy to do especially when you do it regularly. Just take it apart and use regular dish soap and a sponge or brush.