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Hydro turbines, the oldest and also the mostly used renewable energy source, hold the highest efficient of power conversion process. The potential head of water is available next to the turbine, so there aren't any energy conversion losses, exactly the mechanical and copper losses inside the turbine and generator and the tail end loss. The efficiency is inside the range of 85 to 90 %.
Saltwater with your tank is an extremely complex fluid. It contains not just great variety of organic elements, also inorganic elements, as well as tiny microscopic lifeforms. naturally around the reefs, the chemistry with the water changes little or no. Universally the parameters are nearly constant around all reefs on the globe. The result is these animals are not used to modifications in water chemistry that is different from day to day or hour to hour.
There are many factors to judge but I prefer to keep things quick and easy. Choose varieties that are perennial on your growing zone and for that reason will demand less maintenance. However, be careful of some fast growing perennials because if they get established and growing they are sometimes impossible to halt.
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