As an Amazon Associate, we earn from qualifying purchases. PM3 Dissolved Oxygen Module - Bulk Reef Supply Neptune Systems . 209671 Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product NamePM3 Dissolved Oxygen Module - 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, SKU209671 qtySourceupdateFromUrlEntry snippetLets say your Apex system detects low dissolved oxygen in your aquarium, you could have pumps on standby waiting to be activated when levels hit below optimal as well as send you an email or text message Add the Dissolved Oxygen Module: PM3 to your Apex Neptune System to allow continuous real time monitoring of your reef tanks dissolved oxygen levels. Real-time monitoring of dissolved oxygen in reef aquarium Module has extra Temp Probe port (sold separately) I/O Switch Inputs for ATO, feed buttons, leak alarms, etc. Recommended DO level for reef tanks is between 4.5ppm - 7ppm With so many additives that are hitting the market today, that focus on biological nutrient removal can easily and rapidly take up the dissolved oxygen in the tank tierPrice1104.99 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com209671111 @ $104.99