Water change you think?
I would really like to believe that a product like this actually works, but I've never seen it happen long term. Hope this one works for you. With so many tanks running though, certainly you had some media you could have taken to instantly cycle the new tank. It's all well and good though, it is an interesting investigation. I don't know that it would definitely prove anything, but it would give us potentially one case to cite where it did work (of course, this assumes that it does work long term).
+1Well, not exactly. The Biozyme product directs the keeper to add it for a period of 7 days. So, if it isn't actually putting the proper bacteria into the tank (you know, the ones that just show up during a fishless cycle and will deal with the ammonia on a continual basis) and they don't colonize the filter to continue to process the ammonia long after you stop adding the product to the tank, then it won't work long term. When ever you have to continually add something to the tank like this product suggests, I get a bit skeptical that it isn't a biological process, but a chemical one going on. With a biological process, it can sustain itself, but a chemical process needs a constant input of some other agent to continue the process.
Its kind of like the difference between fire (chemical) and photosynthesis (biological). In order to keep a fire going, one must continue add fuel to it, even though there is plenty of oxygen around to be consumed. Meanwhile, photosynthesis happens on its own, because the living agent is able to make use of the elements (light and carbon dioxide) that are present.
Day 6
Ammonia 0ppm (redosed to 5ppm)
Nitrite 4-5ppm
So on day 6, the filter is currently ridding the tank of 5ppm of ammonia in 24hours.