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
Unit Count
1 Count

💧125 ml liquid formula

🦠7-strain microbial blend

🇺🇸Proudly made in USA

¥5840

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧪 Elevate your aquarium’s ecosystem with science-backed clarity!

NUTRIENT NINJA - Boosts nitrification & denitrification to keep your aquarium’s ecosystem perfectly balanced.
TRUSTED TESTED - Veterinarian pathologist recommended formula ensuring safe, reliable water conditioning.
MICROBIAL MASTERY - Harnesses a complex system of aerobic & anaerobic bacteria for superior filtration.
VERSATILE VITALITY - Effective in both freshwater and marine aquariums, supporting diverse aquatic life.
CRYSTAL CLEAR CONFIDENCE - Reduces ammonia, nitrite, nitrate, phosphate & hydrogen sulfide for pristine water clarity.

Brightwell Aquatics MicroBacter7 is a 125 ml advanced microbial liquid formula designed to establish and accelerate biological filtration in freshwater and marine aquariums. Featuring a unique blend of aerobic and anaerobic bacteria, it enhances nutrient cycling, reduces harmful compounds, and improves water clarity. Made in the USA and veterinarian recommended, it’s the go-to solution for maintaining a healthy, vibrant aquatic environment.

Specifications

ASIN	B01DBC0GD4
ASIN	B01DBC0GD4
Allergen Information	Sulphites Free
Best Sellers Rank	#6,730 in Pet Supplies ( See Top 100 in Pet Supplies ) #162 in Aquarium Filter Accessories
Brand Name	Brightwell Aquatics
Customer Reviews	4.7 4.7 out of 5 stars (3,490)
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
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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