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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MicroBacter7

Product ID: 36788255

Details

Brand
Brightwell
Item Form
Liquid
Item Weight
5.12 ounces
Liquid Volume
125 ml
Unit Count
1 Count

💧reduces ammonia, nitrite & phosphate

🦠125ml advanced microbial formula

⚗️boosts nitrification & denitrification

CA$31

Duties & taxes included

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Description

🦠 Elevate your aquarium’s ecosystem with microbial magic!

NUTRIENT NINJA - Accelerate nitrification and denitrification to keep your aquarium’s ecosystem perfectly balanced.
MICROBIAL MASTERY - Harness a complex blend of aerobic & anaerobic bacteria for superior biological filtration.
ODOR TOXIN FIGHTER - Slash hydrogen sulfide production to boost oxygen levels and eliminate foul smells.
CRYSTAL CLEAR CONFIDENCE - Dramatically reduce harmful compounds like ammonia, nitrite, nitrate, and phosphate for pristine water clarity.
VETERINARIAN APPROVED QUALITY - Scientifically tested and proudly made in the USA to ensure premium aquatic health support.

Brightwell Aquatics MicroBacter7 is a 125ml advanced microbial bioculture designed to optimize biological filtration in both freshwater and marine aquariums. It accelerates nutrient cycling by enhancing nitrification and denitrification, reduces harmful compounds such as ammonia and phosphate, and improves water clarity and oxygen levels. Veterinarian-tested and made in the USA, it’s the trusted solution for maintaining a healthy, vibrant aquatic environment.

Specifications

ASIN	B01DBC0GD4
Allergen Information	Sulphites Free
Best Sellers Rank	#6,376 in Pet Supplies ( See Top 100 in Pet Supplies ) #163 in Aquarium Filter Accessories
Brand	Brightwell Aquatics
Brand Name	Brightwell Aquatics
Customer Reviews	4.7 out of 5 stars 3,510 Reviews
Global Trade Identification Number	00810086014996
Included Components	MicroBacter7
Item Form	Liquid
Item Type Name	Aquarium Bacteria
Item Weight	5.12 ounces
Liquid Volume	125 ml
Manufacturer	Brightwell Aquatics
Manufacturer Part Number	BAC125
Model Number	BAC125
Number of Items	1
Number of Packs	1
Pet Type	Fish
Target Species	Fish
UPC	810086014996
Unit Count	1 Count

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