All you will see with this messy product is a drop in Ammonia and a huge spike in your Nitrites. Some Ammo-lock could have done that. Considering that Nitrate will kill your new fish with ease, this product isn't worth a penny. Also, I have never been able to perform an effective fishless cycle in any quick time with the Biozyme. I ended up throwing away my 90% unused bottle just yesterday. NEVER AGAIN.
I've tried to set up several different kinds of tanks with this product to increase the rate of establishment of the nitrogen cycle. This product seems to only accerlate bacteria that oxidize ammonia to nitrite, and none for nitrite to nitrate. After addition, ammonia levels quickly drop in the course of a few days - but a nitrite spike (sometimes over 5ppm) is maintained for 15-30 days. If you choose to use this product, I'd recommend to be vigilant in nitrite testing.
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