| 摘要 |
<p>The structure of the previous water tank has a bottom sealed tightly, so that excrements are not filtered but accumulated within a sand layer, thereby accelerating excrements decomposition, deteriorating water quality. In order to solve this problem, provided that the structure of the water tank consists of fish-bowl room (A) that contains fishes, a drain room (B) that sends water and excrements to a dry-type filtration room, a dry-type filtration room (C) that filters water and excrements by means of the dry-type, a wet-type filtration room (D) that filters water and excrements by means of the wet-type and sends them back to the fish-bowl room for the circulation, and a transmission room (E) that transmits heat from the surface of the fish-bowl room (A) by a convex net plate (10) and install a trumpet structure (12) underneath of the convex net plate (10), so as to allow water and excrements to go down below. This excrements filtering device for a water tank is used for the aquarium tank and livefish tank.</p> |
