The Fluval Sea Flex 32.5 US Gal. (123 L) Saltwater Aquarium Kit makes an exciting addition to Fluval's bold curved aquarium series. It comes equipped with a mobile device operated Marine 3.0 LED that offers total control over brilliant custom colors, multiple dynamic effects and a programmable 24-hour light timer. In addition, this all-new Flex includes a built-in filtration system with 2 independent multi-stage chambers for maximum cleaning efficiency. Key Features : Full spectrum Marine 3.0 LED operates via the FluvalSmart App on your mobile device 25000 K color temperature lighting is ideal for growing vibrant corals 3 pre-set lighting conditions: sunny reef; deep sea glo; color boost 24-hour programmable light timer mimics the natural cycle of the sun and moon Optional space to add a second Marine 3.0 LED (Item# 14513 - sold separately) Powerful 3-stage filtration system 2 independent media chambers for maximum, superior water quality 2 oversized mechanical (foam); chemical (carbon); and biological (Biomax) media - all included Twin output nozzles can be adjusted to create customized water flow Hidden rear filter compartment provides separate media access and offers seamless integration of Fluval PS1 Protein Skimmer (14325 - sold separately) and M-150W Heater (A783 - sold separately) Convenient easy-feed door opening provides option to add PF2 programmable feeder (10786 - sold separately) Honeycomb print camouflages water line Custom cabinetry available - Black (Item# 14985 - sold separately) For saltwater use only Included : Glass aquarium with cover Marine 3.0 LED lighting system Safe, low-voltage transformer Circulation pump with output nozzle 2 X Foam filter block with handle (A1375) 2 X Activated carbon insert (A1377) 2 X BioMax insert (A1378)