I have been servicing seawater tanks for over 20 years. . . at least 15 of them successfully - :-) I successfully drove 32G BioCube from start to finish in 12 days. I checked ammonia/nitrite every day and then twice a day as soon as I noticed traces of nitrite and until the ammonia/nitrite level dropped to zero. Just unbelievable! For fun, I waited another two weeks (checking the levels every other day) to make sure there wasn't another biological bloom or spike in concentration. So I can confirm that the small aquarium has indeed gone through the entire nitrogen cycle. in the aquarium at the beginning? - 20 pounds of CarribSea live sand - 10 pounds of hardened live rock - 20 pounds of dry rock uses 25-50% more product per dose - which I did.
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