I'm not sure if anyone is actually still following this topic lol, but below are the results after 10 weeks of running one of my tanks since the last time the filter media was cleaned. The first pic is after cleaning, and with 2 new layers of Marineland bonded filter media (blue/white), the second pic shows the filter after 10 weeks of run time, adding 1/4 teaspoon of Bio-Clean bacteria each week. (125 gallon tank, with three AC 110's for filtration)
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There was still really good flow, so plenty of 02 available to the bacteria, but I wouldn't have wanted to push these filters more than a couple of more weeks. Overall I'm very pleased with the results of the Bio-Clean bacteria and I will continue to use it from here on in. It buys me an additional month or more between cleaning, it outcompetes problem algae, cyanobacteria, and pathogenic bacteria, and unlike the other septic products that I have tried and/or read about over the years, Bio-Clean is really clean when adding it to ones tank. It's a win-win for me.