The Arowana is an extremely massive but graceful fish that makes an exceedingly intriguing freshwater tank inhabitant. beams: The beams act to support the ground joists. These beams might be constructed of vast-flange steel beams (usually and improperly termed an I-beam) or they could be Wooden triple two x ten's, https://caidenioakt.blogunok.com/37536429/about-aquarium-setup-tips