The Mantis 4 Stage RO/DI system delivers comprehensive water purification through four sequential filtration stages—sediment pre-filter, activated carbon block, reverse osmosis membrane, and colour-changing DI resin. Its bracket-mounted design offers portability and flexibility, requiring no permanent plumbing modifications, making it ideal for marine, planted, and shrimp aquariums. The integrated pressure gauge lets you monitor performance at a glance, while the intelligent resin indicator signals when replacement is needed to maintain optimal water purity. Setup is straightforward, allowing you to start producing high-quality water quickly.