How often do I add this to the tank to get it cycled? Is it an everyday thing, or once a week?

Every day, per the instructions.

Instructions say "turn off uv/ozone" before adding. i have fluorescent lighting in a freshwater tank. should i turn off the fluorescents?

The reason to shut off the UV is because the product contains specific bacteria. In our tanks, we do not shut off the fluorescent lights, only the UVHere is a link to their website http://www.seachem.com/Products/product_pages/Stability.htmlNan

Will having this shipped to a currently cold/freezing location destroy the beneficial bacteria?

It should not, the bacteria is in a dormant state wont wont really be living till you put it in your tank.

How much would I need to cycle two 5 gal tanks?

As much as you can afford. I add it periodically can my tank and been cycled for a couple months. Like with large water changes or introducing new fish.

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Stability, 100 mL / 3.4 fl. oz.

Product ID: 16571145

Details

Brand
Seachem
Item Form
Stick
Liquid Volume
100
Manufacturer
Seachem Inc.
Unit Count
3.4 Fluid

🌊Safe for freshwater & marine life

🧬Synergistic triple bacteria blend

⏱️Rapid bio-filter setup in hours

KSh3415

Duties & taxes included

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Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🐠 Stabilize your tank, dominate your aquatic ecosystem!

OVERUSE PROOF FORMULA - Harmless to fish and plants, so you can dose with confidence and zero stress.
ZERO TOXIC BYPRODUCTS - Non-sulfur fixing bacteria mean no harmful hydrogen sulfide—pure safety for your aquatic friends.
UNIVERSAL COMPATIBILITY - Perfectly formulated for both freshwater and marine ecosystems—one solution, all tanks.
FAST TRACK AQUARIUM STABILITY - Kickstart your bio-filter and crush new tank syndrome before it starts.
TRIPLE ACTION BACTERIAL POWER - Aerobic, anaerobic, and facultative bacteria team up for total waste breakdown.

Stability is a scientifically advanced aquarium water treatment that rapidly establishes a bio-filter using a unique blend of aerobic, anaerobic, and facultative bacteria. Designed to prevent new tank syndrome—the leading cause of fish mortality—this 100 mL solution is safe for all freshwater and marine species, non-toxic, and backed by nearly a decade of research. Ideal for professional aquarists and hobbyists alike, Stability ensures a healthy, thriving aquatic environment with zero risk of overuse.

Specifications

ASIN	B0002APIJ6
ASIN	B0002APIJ6
Allergen Information	Yam Free
Best Sellers Rank	#2,737 in Pet Supplies ( See Top 100 in Pet Supplies ) #12 in Aquarium Water Treatments
Brand Name	Seachem
Customer Reviews	4.8 4.8 out of 5 stars (13,478)
Date First Available	June 20, 2004
Department	Unisex-Adult
Global Trade Identification Number	00000116012508
Included Components	water treatment
Is Discontinued By Manufacturer	No
Item Form	Stick
Item Type Name	Aquarium Conditioner
Item model number	001062
Liquid Volume	100 Milliliters
Manufacturer	Seachem Laboratories, Inc.
Manufacturer	Seachem Laboratories, Inc.
Manufacturer Part Number	075179
Manufacturer recommended age	1 month and up
Model Number	001062
Pet Type	Fish
Target Species	Fish
UPC	000116012508 000116008211
Unit Count	3.4 Fluid Ounces

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