: Many specialized aquarium shops like New Dawn Aquaculture sell RO/DI water by the gallon. You typically bring your own 5-gallon jugs to refill.
: Some kiosks or water-focused stores provide high-purity water. However, verify the TDS (Total Dissolved Solids) of the water. Some commercial "purified" water stations add minerals back for taste, which can be harmful to sensitive corals or shrimp. buy ro di water
Deciding whether to buy water or a machine depends on your tank size and frequency of water changes: : Many specialized aquarium shops like New Dawn
: You can purchase RO/DI units and replacement filters from major hobbyist sites like Bulk Reef Supply . Buying vs. Making Your Own buy ro di water