Actually one of the other posters emailed them awhile back and as far as I know has not received any answers.
And if one went through life without ever making an assumption about anything, well, try walking through Compton at midnight with a wad of cash in your hand without assuming your going to get robbed
Or better yet, I have this black plastic tube, put it in your tank and I guarantee that it will make your tank look pristine and spectacular over night. It uses no electricity, no maintenace is required.
Now, that's all I'm saying about it, and I'll be highly offended if anyone dares to question whether or not it works, or discusses what it is or even how it works beyond what I've already told them