The Arowana is an extremely massive but graceful fish which makes a very exciting freshwater tank inhabitant. beams: The beams act to aid the ground joists. These beams may very well be made of broad-flange steel beams (commonly and improperly known as an I-beam) or they could be Wooden triple https://echobookmarks.com/story20299017/an-unbiased-view-of-aquarium-setup-tips