ambrosiamonkey said:That's news to me. According to my LFS, Bio-Spira was unavailable for a while because Marineland couldn't keep up with the demand, but it is now available again, I got some a week ago and used it to set up a new 50 gallon tank last weekend, and it's worked out with no problems so far. I understand that it has to be continuously refrigerated. If the refrigeration breaks down somewhere in the shipping process, that would affect how well it works and it might be presented as a "shelf life problem" as an explanation.
I read that on here but someone said that that stopped production b/c they could not keep up with demand. But no one stops production b/c demand is high. According to all my LFS, it was shelf life that was the reason it was taken off.
I did see an ad for it one of the mags that stated that it's coming back and that it's new & improved.
That implies (to me) that they stopped production due to shelf life issues.
I'm not going to deniy that it's not good. I've used it, just it to play with it. Worked great BUT if you did get some that was not fresh it was useless. I setup over a 100 plus tanks in the last 2 yrs.