Can we add this to an existing reef with slightly elevated ammonia?

If by existing you mean live stock in it? Yes, and if you mean no stock but ammonia, yes again. You might be better off doing a water change if you have life in tank though. If you dose this you will have to monitor nitrite and nitrate cycles.

Im new...will this kill off my invert food sources or hurt them in any way?

It will not kill your invert food source. It’s bacteria that’s beneficial to your aquarium

Noob question how much of this do I use on a 32 gallon biocube? It’s a new tank I can’t find any measuring cups for ML anywhere n my town

Once your tank has been fed regularly for a few days either with out without fish to start the bacterial cycle, add half during the first week and the other half during the 2nd. Add a small amount after water changes is also a good idea for upkeep. Buy 2 bottles.

how long did it take for this product to bring down nitrite levels?

I wouldn't use this product as a means of nitrite reduction. Live rock will do a much better job of that. I use this product as a means of adding biodiversity to my tank. It did nothing for nitrate levels.

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Brightwell Aquatics MicroBacter7 Biological Filter Bioculture Aid, 125 ml

Product ID: 36788255

Details

Brand
Brightwell
Item Form
Liquid
Item Weight
5.12 ounces
Liquid Volume
125 ml
Number of Packs
1

🌊boosts nitrification & denitrification

🦠125 ml advanced microbial formula

⚗️reduces ammonia, nitrite & phosphate

EC$105

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧪 Elevate your aquarium’s ecosystem with microbial magic!

MICROBIAL MASTERY - Harness a complex blend of aerobic & anaerobic bacteria for superior biological filtration.
AQUARIUM CLARITY BOOST - Rapidly reduce harmful compounds like ammonia, nitrite, nitrate, and phosphate for crystal-clear water.
DUAL ECOSYSTEM SUPPORT - Perfectly formulated for both freshwater and marine aquariums, ensuring versatile aquatic health.
ORGANIC WASTE BREAKDOWN - Accelerate organic waste degradation to maintain a pristine, balanced tank environment.
MADE IN THE USA WITH SCIENCE - Veterinarian-tested, scientifically backed formula delivering trusted, premium aquarium care.

Brightwell Aquatics MicroBacter7 is a 125 ml liquid bioculture aid featuring a scientifically advanced microbial formula that enhances biological filtration and water quality in both freshwater and marine aquariums. It accelerates nitrification and denitrification, reduces harmful compounds like ammonia and phosphate, and promotes a clean, healthy aquatic environment. Made in the USA and veterinarian recommended, it’s the go-to solution for aquarium enthusiasts seeking vibrant, crystal-clear tanks.

Specifications

ASIN	B01DBC0GD4
ASIN	B01DBC0GD4
Allergen Information	Sulphites Free
Best Sellers Rank	#5,749 in Pet Supplies ( See Top 100 in Pet Supplies ) #101 in Aquarium Filter Accessories
Brand Name	Brightwell Aquatics
Customer Reviews	4.7 4.7 out of 5 stars (3,532)
Date First Available	March 23, 2016
Global Trade Identification Number	00810086014996
Included Components	MicroBacter7
Item Form	Liquid
Item Type Name	Aquarium Bacteria
Item Weight	5.12 ounces
Item model number	BAC125
Liquid Volume	125 ml
Manufacturer	Brightwell Aquatics
Manufacturer	Brightwell Aquatics
Manufacturer Part Number	BAC125
Model Number	BAC125
Number of Items	1
Number of Packs	1
Pet Type	Fish
Product Dimensions	5.13 x 1.63 x 1.63 inches; 5.12 ounces
Target Species	Fish
UPC	810086014996
Unit Count	1 Count

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