MICROBE-LIFT Nite-Out II Aquarium Bacteria for Start-up, Instantly Cycle Aquariums, Add Fish on Day 1, Rapid Ammonia and Nitrite Reducer for Freshwater & Saltwater Fish Tank, 16 Ounces (NITEH16)

Price: $18.35 - $15.98
(as of Jul 21, 2026 00:53:59 UTC – Details)
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Jump-start biological filtration with MICROBE-LIFT Nite-Out II, a concentrated blend of live nitrifying aquarium bacteria for freshwater and saltwater fish tanks. This aquarium water conditioner seeds the biofilter with beneficial bacteria that rapidly convert toxic ammonia to nitrite and then to nitrate, helping prevent spikes that stress fish and cause losses. Formulated with Nitrosomonas and Nitrobacter, it establishes and maintains nitrification in new or established systems. Use as an aquarium starter bacteria for new aquariums and as ongoing support after water changes, filter cleanings, medication, or adding new livestock. Safe, biodegradable, and reef-safe, it works with most aquarium water treatments and is suitable for community, planted, and reef setups. Directions: shake well; dose at setup, then daily until ammonia and nitrite read 0 ppm; add weekly or whenever bioload increases to maintain stability. Note: Nite-Out II does not directly remove nitrate; manage nitrate with water changes or the use of Microbe-Lift Special Blend.
Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 2.5 x 2.5 x 7.5 inches; 1 Pounds
Item model number ‏ : ‎ niteh16
Department ‏ : ‎ Unisex-Adult
Date First Available ‏ : ‎ April 3, 2008
Manufacturer ‏ : ‎ Ecological Laboratories Inc.
ASIN ‏ : ‎ B00176ENNG
Best Sellers Rank: #4,723 in Pet Supplies (See Top 100 in Pet Supplies) #26 in Aquarium Water Treatments
Customer Reviews: 4.5 4.5 out of 5 stars (1,846) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
IMPROVES WATER QUALITY: Microbe Lift Nite-Out II is a special blend of live bacteria that specifically decreases ammonia and nitrite toxicity in aquariums and fish tanks; this solution is safe for all marine life and is effective in freshwater and saltwater
REDUCE AMMONIA AND NITRITES: The cultures contained in Nite-Out II will establish and maintain nitrification in aquarium waters, eliminating the toxic effect of ammonia; Nitrosomonas oxidize ammonia to nitrite and Nitrobacter oxidizes nitrite to nitrate
AQUARIUM WATER CONDITIONER TO REDUCE FISH LOSS: Maintaining tanks with Nite-Out II produces an ecosphere that is welcoming to new fish; Its large numbers of nitrifying bacteria keep ammonia levels low and facilitates a smooth introduction of new fish
BACTERIA STARTER FOR FISH TANK: Nite-Out II is great to use as a starter treatment; Prepare an aquarium by introducing beneficial bacteria prior to adding fish or other marine life; Help reduce fish stress by minimizing ammonia spikes
SAFE & REEF FRIENDLY: Non-toxic, biodegradable formula is reef safe; Suitable for community tanks, planted systems, and marine reef aquariums; Works as a fish tank cleaner companion to routine maintenance; Safe for use around humans, pets, and wildlife