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Brightwell QuikCycl

Brightwell QuikCycl

Regular price $7.99 CAD
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Professional nutrients for the fishless cycle and the establishment of strong beds of nitrifying bacteria in freshwater and saltwater aquariums.


Caution: Contains ammonia, Keep out of reach of children. Not for human consumption. If swallowed, contact a poison control center immediately.

NOTE: THIS PRODUCT IS DESIGNED FOR THE FISHLESS CYCLE. NEVER PUT IN AN AQUARIUM containing LIVE FISH, PLANTS OR INVERTEBRATES. ADD ANIMALS ONCE THE CYCLE IS COMPLETE!!! This product alone will not cycle an aquarium, it simply provides the nutrients. You must use a good quality bacterial culture to establish the bacterial bed in the aquarium. We highly recommend Brightwell MicrōBacter Start XLM or MicrōBacter Start XLF depending on your aquarium needs. This product can also be used with MicrōBacterCLEAN to run a marine aquarium, but the cycle may not be as fast as using MicrōBacter Start. DO NOT OVERDOSE, EVER! Be patient, the life of your animals is at stake!

You must use test kits to measure pH, ammonia, nitrites and nitrates to complete the cycle on an aquarium. If you try to run the tank without proper testing, you are asking for disaster and you will likely kill your fish. Brightwell is not responsible for indiscriminate use of this product! We recommend that you read up on aquarium cycling so you know what it is. Please also see our website at for more information.

This product requires simultaneous use with a LIVE BACTERIAL CULTURE: Aquarium bacterial products vary widely in characteristics, strength and general design. The results you get will be very different if you use an inferior or outdated bacterial culture or one that has been stored incorrectly and at harmful temperatures. Nitrifying bacteria are damaged by heat and outright killed by freezing, so care must be taken to preserve their effectiveness. If the bacterial product you are using is dead, then this whole process will not work! Brightwell strongly recommends that you use MicrōBacter Start XLM or MicrōBacter Start XLF depending on whether you are starting a marine aquarium or a freshwater aquarium. For soft water, a more economical choice can be made using FlorinBacter One, FlorinBacter or FlorinBacter7.

Instructions and guidelines
Instructions for quickly cycling a new aquarium without fish:

Day 1:

Note: DO NOT USE CARBON, GFO or other phosphate removers until the cycle is complete and another 30 days have passed! If you do, you will slow down the cycle!
a) Turn off skimmer, UV and remove fine filtration such as socks, ensure the aquarium has sufficient filtration area such as that provided by world class Brightwell XportTM or Micrōbacter LatticeTM bacterial filtration media .
b) You must first use a good dechlorinator, such as Brightwell Erase to remove chloramines and chlorine!
c) Prepare water and adjust pH, alkalinity and temperature
d) Add the full dose of QuikCyclTM at the rate of 4 drops per gallon or 1 ml per 5 gallons of tank capacity
e) Measure the ammonia which must be between 1 and 2 ppm of total ammonia, ie ammonia plus ammonium (NH3 and NH4+). Don't overdo it to get the right reading either today or in the days to come. This is because the bacteria will quickly begin to use the ammonia, and even if it is added, it may not show up on your tests.
f) Add MicrōBacter Start XLM or MicrōBacter Start XLF according to your aquarium needs as directed.

Day 2: Measure pH, ammonia and nitrites and record values.

On Day 3: Measure pH, ammonia and nitrite and record values.

Day 4: Measure pH, ammonia and nitrites. If the ammonia or nitrite is above 0.25 ppm, you can add more bacteria, if desired.

On day 5: measure pH, ammonia and nitrite and record values

On Day 6: Measure pH, ammonia and nitrites. If the ammonia or nitrite is above 0.25 ppm, you can add more bacteria, if desired.

On Day 7: Measure pH, ammonia and nitrites. If you are using MicrōBacter Start XLM, MicrōBacter Start XLF and your ammonia and nitrites show zero, measure the nitrate. If the nitrate reads 0.25 ppm or more, your aquarium is cycled. If using other bacteria skip to day 8.

On Day 8: Measure pH, ammonia and nitrite and record values.

Day 9 and beyond: Measure pH, ammonia, and nitrites. If the Ammonia + Nitrite value is zero then measure the nitrate and if there is a Nitrate reading of 0.25ppm or higher then the aquarium is cycled.

At the end of the cycle, perform a 25% water change and start adding hardy animals, SLOWLY. Restart UV, skimmer and filtration. Go slowly!

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