Standard U.S. shipping: $12.99; free standard shipping on eligible qualifying orders of $100 or more. Specialty shipments are charged separately.
Shipping & Delivery
Standard/Economy: $12.99; free standard shipping on eligible qualifying orders of $100 or more.
Most in-stock orders process in 1–3 business days. Estimated standard transit is 5–12 business days after dispatch. Backorders, preorders, and special orders follow their stated lead times. Dates are estimates, and separate shipments may have separate charges.
Review the Shipping & Live Arrival Policy and final charges at checkout. International rates and specialty charges are separate from domestic standard offers.
IceCap RO/DI Refillable DI Cartridge | Replacement Stage 4
Refillable stage-four DI cartridge for compatible IceCap RO/DI systems. Fill tightly with mixed-bed DI resin and monitor product-water TDS. Resin is sold separately.
Keep replacement filters on hand for regular RO/DI maintenance. Confirm the size and stage match your system before ordering.
Why buy from Infinity & Beyond Aquatics?
Find the matching RO/DI parts and accessories for your aquarium water changes in one place.