Do the bottoms just screw off of these? I have always used tap water because the quality is so good, until this more recent tank and I have no idea how to replace the filter media.
The Bulk Reef Supply guys just want to sell me inserts ( https://www.bulkreefsupply.com/brs-4-stage-value-replacement-filter-kit-bundle.html ), but to take it apart first to verify, what media is in it. Even though I was pushing back and suggesting I should be getting one of these. https://www.bulkreefsupply.com/4-stage-value-100-gpd-ro-di-system-bulk-reef-supply.html
The Bulk Reef Supply guys just want to sell me inserts ( https://www.bulkreefsupply.com/brs-4-stage-value-replacement-filter-kit-bundle.html ), but to take it apart first to verify, what media is in it. Even though I was pushing back and suggesting I should be getting one of these. https://www.bulkreefsupply.com/4-stage-value-100-gpd-ro-di-system-bulk-reef-supply.html