LANDEN 35C tank with filtration chambers (No. 901004) is a cubic style, ultra-clear glass, frameless, low-iron aquarium tank designed for saltwater and freshwater. This fish tank is characterized by three pre-built rear chambers for you to DIY a set of back filters and a flow guide system. It uses the internal backspace of the fish tank to form a whole fish tank and filter system. The filter equipment can be placed directly inside, such as bio-fabric, carbon, or filter sponge. The filtration process can be completed without using other positions, without affecting the fish tank's positive vision and overall beauty. The whole filtration system is easy to clean and exchange filter material. Landen 901004 fish tank is of excellent quality and exquisite workmanship.The whole water tank is made of 6mm thick ultra-white glass with a beveled edge；The light transmittance of side window glass is over 91%；The tank can bear strong pressure resistance and is made of acid and alkali-resistant material; Standard right angle, mirror edge grinding, accurate size; High-quality German silica gel process, handmade by professional craftsmen, smooth edges, corners, and the silica gel edge；The water inlet of the filtration system is detachable and easy to clean. The product contains an adjustable directional nozzle for precise water stirring， the nozzle is also easy to uninstall to be cleaned; a free EVA material foam leveling mat for the tank stability, reducing vibration and noise. Specifications for Fish Tank: Size: 13.78" L x 13.78" W x 13.78" H (35cm x 35cm x 35cm) 6mm thickness; Capacity(not including filtration chamber): 7.2 Gallon; Material: Low iron glass; Net weight: 28.7 lbs; Packing weight: 35.5 lbs. Return Tube Inner/Outer Diameter: 12mm/16mm(0.48/0.63inch)