May I use this when cleaning an aquarium weekly instead of using stress enzyme?

Yes, I use it every time I clean the aquarium. I usually put half the required amount directly into the filter (once I've clean it) and the rest in the tank itself. Its perfect for introducing new fish to the aquarium as well as when cleaning it out.

How much quick start should i use when doing a water change? should i use dosage vs total water in the tank (30l) or water i am changing (7.5l) thx

As it's a partial water change; not servicing the filter itself; stick with the amount for the total capacity of the tank will be adequate. A little over will do no harm either, adding a little now & then will keep both the tank & filter up with its ideal bacteria levels to process the muck etc. Some with more money then sense will dump the whole bottle regardless.

Do I need to remove the carbon whilst using Quick start.

Not at all, its all part of the natural waste breakdown you're attempting to build into the filter system overall. In any-case usual charcoal media is replaced a few times before the rest of the filter needs cleaning out. The charcoal itself will be somewhere else for the good bacteria to colonise. In some cases the bacteria will help quicken the breakdown the mulm clogging up the charcoal too & may extend its use a little.

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API Quick Start Nitrifying Bacteria for Freshwater and Saltwater Aquariums, 118 ml Bottle

Product ID: 48557707

Details

Brand
API
Item form
Liquid
Item weight
136 g
Liquid volume
118
Number of Packs
1

⚡Instant fish addition

🌊Works in fresh & saltwater

🧪Reduces harmful compounds

179 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🐠 Dive in now—your fish’s new best friend for a thriving tank!

TRUSTED PROVEN - Highly rated with 15,000+ reviews and top 20 in aquarium treatments ⭐
DUAL ENVIRONMENT POWER - Effective in both freshwater and saltwater tanks 🌊
PROTECT YOUR INVESTMENT - Routine use reduces toxic compounds to prevent fish loss 🧪
STRESS FREE TANK MAINTENANCE - Supports water changes and filter swaps without disruption 🔄
START YOUR AQUARIUM INSTANTLY - Add fish immediately with powerful nitrifying bacteria ⚡

API Quick Start Nitrifying Bacteria is a 118 ml liquid formula designed to instantly establish beneficial bacteria in both freshwater and saltwater aquariums. It enables immediate fish addition, reduces harmful nitrogen compounds, and supports healthy aquatic environments during tank startups, water changes, and filter maintenance. Trusted by thousands with a 4.7-star rating, it’s a must-have for any serious aquarium enthusiast.

Specifications

ASIN	B006YG1ZLC
Allergen Information	Allergen-Free
Best Sellers Rank	2,007 in Pet Supplies ( See Top 100 in Pet Supplies ) 16 in Aquarium Water Treatments
Brand Name	API
Country Of Origin	USA
Customer Reviews	4.7 4.7 out of 5 stars (15,314)
Global Trade Identification Number	00317163030899
Included Components	See Description
Item Form	Liquid
Item Type Name	API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 118 ml Bottle
Item Weight	136 g
Liquid Volume	118 Millilitres
Manufacturer	API
Manufacturer Part Number	89C
Model Number	89C
Number of Items	1
Number of Packs	1
Pet Type	Fish
Product Warranty	Manufacturer Fault
Target Species	Fish
UPC	317163030899
Unit Count	118.0 millilitre

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