As an Amazon Associate, we earn from qualifying purchases. Lab Grade Dissolved Oxygen Probe - Bulk Reef Supply Neptune Systems . 209672 Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product NameLab Grade Dissolved Oxygen Probe - 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, SKU209672 qtySourceupdateFromUrlEntry snippetLab Grade Dissolved Oxygen Probe for Neptune PM3 Module. The price of the probe isn't all that cheap compared to the traditional probes we use in this hobby, but this probe can easily last you a lifetime because the actual sensing membrane is replaceable. About every 3 months you will need to replace the membrane within the probe, which can be done in a matter of minutes and is very economical. After replacing the membrane the probe will function as if it were new. Includes 10ft cable. Sensor Membrane within the probe should be replaced every 3 months Dissolved oxygen can easily be manipulated with either air pumps and air stones, aiming return nozzles at the surface of the water, or a water pump that vertically pushes the water to the s tierPrice1789.99 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com209672111 @ $789.99