Fluval Cycle Biological Enhancer, Aquarium Water Treatment, 16.9 Oz., A8351

After using it as suggested within a few days, Ammonia was converted to Nitrite. However, for 2 months and 2 bottles of Fluval Biological Enhancer, it could not bring Nitrite down. Brought Tetra Safe Start and, within days, Nitrite is gone.

No sirve, no ayuda en nada al agua.

Phenomenal product, cut my cycling time in half atleast, maybe more. Highly recommend for cycling, heavy duty water changes so u don’t crash tank, and supposedly is great for adding fish

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Good

As soon as you start reading NO2, dose with this. Add your Ammonia readings and your NO2 readings daily and if they equal or are under 1ppm, dose a single dose for your size Aquarium with Seachem Prime, all the way up to 4ppm when added together in which case there would be a quadruple dose of SCPrime.. If Ammonia spikes to 2 ppm just do a 80% water change and add more fluval + SC Prime. If the Ammonia AND NO2 readings when added together equal more than 4 ppm, do a 80% water change and dose with fluval + SCPrime. if NO3 reads more than 40 ppm with no Ammonia or NO2, do a 50% water change but DO NOT ADD MORE FLUVAL. And of course, treat your tap water with SC Prime every time. ONLY add FLUVAL when there is NO@ present. Without NO2 the NO3 this product seems to add will not have anything to eat and will die off. Theres a few great videos on youtube and tutorials in groups. This has worked for me EVERY time so far.

I used Fluval Cycle biological during a new 20 gallon tank fishless cycle. I did not have any seeding material from an established tank; I did buy two Java Ferns for my tank. I researched how to do the fastest fishless cycle, and here is how it went! :) Day 1: Dosed Fluval bacteria as bottle instructs Dosed 4 Drops per gallon Dr. Tim’s ammonia Added tiny bit of fish food Lowered water a few gallons to increase aeration Turned heater to 84 degrees Keep aquarium lights off the entire time Day 2: Dosed bacteria as instructed Ammonia: 2.0 Nitrites: 1.0 Day 3: Dosed bacteria as instructed Ammonia: 1.0-1.5 Nitrites: 2.0 Day 4: Ammonia: 1.0 Nitrites: 4.0-4.5 Day 5: Ammonia: .75-1.0 Nitrites: 5.0 Day 6: Did 80% water change (added Prime to new water) to lower level of nitrites in the water and bring the pH closer to neutral. The bacteria lives on the surfaces of the tank and in the filter. Too high of nitrites can stall the cycle. Added ammonia. Ammonia: .50 Nitrites: 5.0 Nitrates: 30 ppm pH: 8.2 Day 7: Added bacteria Ammonia: 2.0 Nitrites: 2.0 Day 8: Ammonia: 1.0 Nitrites: 1.5 Day 9: Added ammonia. Ammonia: 0 Nitrites: 2.0 Day 10: Added Ammonia Ammonia: .25 Nitrites: 2.0 Day 11: Added bacteria Added little ammonia Ammonia: 0 Nitrites: 2.0 Nitrates: 5.0 Ph: 8.0 Day 12: Ammonia: .25 Nitrites: 1.5 Did 80% water change and added ammonia and bacteria. Day 13: Added ammonia Ammonia: 0 Nitrites: 2.0 Day 14: Added ammonia Ammonia: 0 Nitrites: .25 (finally a big drop!!!!) Day 15: Added Ammonia Ammonia: 0 Nitrites: 0 Nitrates: 80 ppm Cycled!!!! Woo!!! Gradually Lower temp to 76. Do a large water change prior to adding fish.

If youre losing you big guppies you have New Tank Syndrome. Follow the directions on Fluval Cycle and completely eliminate your guppy losses.

I start every saltwater tank with this stuff and does weekly after. Best bio enhancer!

Fastest working product to cycle new fish tank ....in my opinion. Worked wonderful for me.