As an Amazon Associate, we earn from qualifying purchases. DOS & DDR Dosing System Package - Bulk Reef Supply Neptune Systems . 210158B Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product NameDOS & DDR Dosing System Package - Bulk Reef Supply keywordssaltwater aquarium supplies, reef aquarium supplies, marine fish tank, live rock, GFO, protein skimmers, two part dosing, aquarium carbon, fish food, RO/DI Systems, ecotech marine, aquaillumination, neptune systems, kessil, innovative marine moq, multiple, tierMinQty11 MPN, SKU210158B qtyInStock0 snippetNeptune DOS & DDR Dosing System Package Package includes: DOS Fluid Metering System DDR DOS Dual Reservoir System When you pair the DOS Fluid Metering System with the DDR Dual Reservoir System you create one of the smartest, state of the art dosing packages in the world. In conjunction with Apex Fusion the ability to make minor adjustments is easier than ever, even allowing you to monitor how much of your favorite liquid 2-part or trace element is left in the DDR Reservoir. The Neptune DOS Fluid Metering System is one of the smartest dosing pumps on the market. It will hook directly to your existing Neptune Apex, ApexEL, or Apex Jr. giving you the ability to program both pumps independently for what ever kind of dosing your tank tierPrice1479.95 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com210158B111 @ $479.95