Instant ocean bio spira

Can someone tell me how good the instant ocean bio spira is when cycling

It does somewhat come down to what you quantify as "good."

It will help get a tank cycle started in my experience. It may even help the cycle happen more quickly. The combination of that plus a bit of a food source (e.g. a small piece of raw shrimp) tossed into the tank for a few days can also be a good combination.

Ultimately, it comes down to the ammonia cycle ... there must be something as a food source, the ammonia must come up, then drop to 0, the nitrites must also come up, then drop to 0 (lagging behind ammonia), and nitrates must then rise to something above 0. Only after the spike has been seen, and then observed through testing to have dropped, will I consider a tank to be "cycled."
 
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