Everything you need. Keep algae at bay with clean reverse osmosis, de-ionized water. Sediment filter, 2 carbon, RO membrane and DI resin. Includes pressure gauge, TDS meter, float switch and various extra 1/4 line and 1/4 turn valves. Extra media: 7 sediment, 3 carbon, 1 RO membrane, 2 packages color-changing DI resin.
