Why fish tank must not covered

Why some people have fish, see the effect?The answer is very simple, because you built a board on the fish tank.Whatever your fish to feng shui or viewing, please note that an aquarium how to work?Is to let the fish tank water to rise unceasingly, will cover the fish tank, aquarium there would be no effect, so some large institutions to raise fish, very beautiful, but that is covered with the fish tank, so the fish tank won't produce geomantic effect.

So you must remember when fish, fish tank must be no cover, is the real pool, can only be truly fulfilled five line of water.