I can speak from experience, the product works as advertised.
Your mileage may vary.
I setup an old 30 Gallon High tank, an Emperor 280 filter, undergravel filter, and 26 fish (!) consisting of twelve Neons, four Leopard Dainos, six Gouramies (three Three Spot and three Sunset), two Cory Cats and two Red Eye Tetras on 12/22/02. I added 3oz of Bio-Spira four days after the fish were added on 12/26/02.
Tank Log:
PH: 7.0
12/22/02 - New setup NH3 - 0, NO2 - 0
12/26/02 - Added Bio-Spira (3oz) NH3 - 3.0, NO2 - 0.3
12/27/02 - 5 gallon H2O change, NH3 - 3.0, NO2 - 0.3 (before H2O change)
12/29/02 - 5 gallon H2O change, NH3 - 1.5, NO2 - 0.3, NO3 - 12.5(before H2O change)
12/30/02 - NH3 - 0.25, NO2 - 1.6
12/31/02 - 5 gallon H2O change, NH3 - 0, NO2 - 1.6 (before H2O change)
1/5/03 - NH3 - 0, NO2 - 0, NO3 - 12.5
Considering the fish load, the accumulated NH3 and NO2 present before adding the Bio-Spira, it worked better than I could have hoped. I estimate the tank fully cycled in one week, with a four day full fish load in place when the Bio-Spira was added. The tank is clean as a whistle, and the fish are all happy and healthy.
I lost 4 Neons during the process, but I chalk that up to buying six fish at one store and six more at another store that were not as healthy or large. I did loose one Sunset Gourami about 10 days ago, well after the tank was cycled. I also chalk up his demise to him being rather timid and potentially diseased when he was purchased.
Your mileage may vary.
I setup an old 30 Gallon High tank, an Emperor 280 filter, undergravel filter, and 26 fish (!) consisting of twelve Neons, four Leopard Dainos, six Gouramies (three Three Spot and three Sunset), two Cory Cats and two Red Eye Tetras on 12/22/02. I added 3oz of Bio-Spira four days after the fish were added on 12/26/02.
Tank Log:
PH: 7.0
12/22/02 - New setup NH3 - 0, NO2 - 0
12/26/02 - Added Bio-Spira (3oz) NH3 - 3.0, NO2 - 0.3
12/27/02 - 5 gallon H2O change, NH3 - 3.0, NO2 - 0.3 (before H2O change)
12/29/02 - 5 gallon H2O change, NH3 - 1.5, NO2 - 0.3, NO3 - 12.5(before H2O change)
12/30/02 - NH3 - 0.25, NO2 - 1.6
12/31/02 - 5 gallon H2O change, NH3 - 0, NO2 - 1.6 (before H2O change)
1/5/03 - NH3 - 0, NO2 - 0, NO3 - 12.5
Considering the fish load, the accumulated NH3 and NO2 present before adding the Bio-Spira, it worked better than I could have hoped. I estimate the tank fully cycled in one week, with a four day full fish load in place when the Bio-Spira was added. The tank is clean as a whistle, and the fish are all happy and healthy.
I lost 4 Neons during the process, but I chalk that up to buying six fish at one store and six more at another store that were not as healthy or large. I did loose one Sunset Gourami about 10 days ago, well after the tank was cycled. I also chalk up his demise to him being rather timid and potentially diseased when he was purchased.