As an Amazon Associate, we earn from qualifying purchases. DOS Dosing and Fluid Metering System - Bulk Reef Supply Neptune Systems . 208869 Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product NameDOS Dosing and Fluid Metering System - Bulk Reef Supply extendedQty, qtyInStock0 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, SKU208869 qtySourceupdateFromUrlEntry snippetDOS – Dosing and Fluid Metering System 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 may need. The DOS pump includes two pump heads for the most common of two-part dosing, but it is not limited to just two part dosing. You can use it for automatic water changes once a week or even once a day, minor trace element additive dosing, liquid food dosing, or pretty much any other liquid your tank may need to be dosed in metered amounts. You simply just hook the DOS Fluid Metering system to your Apex controller with the included Aq tierPrice1349.99 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com208869111 @ $349.99