Azoo Twin Calcium Reactor ?

[eleyan]

Anyone ever used the Azoo Twin Calcium Reactor? I keep seeing them on ebay really cheap (~$70-$80):

http://cgi.ebay.com/ws/eBayISAPI.dll...category=20758

their design looks different than the standard reactors, I don't see the pump that circulates the water in the reactor chamber like the Knob and other reactors. So I'm not sure if that makes it harder to control the PH in it. It says it works for up to 450G tanks.

[matt]

I'd be very skeptical about this reactor. It's hard to get an idea of how it works, but one thing for certain is that it's not big enough to hold much media. Works for 450 gallons? Wanna buy a bridge?

[eleyan]

This is interesting:
5. For the tank under 200L (55gal) CO2 supply is not necessary, just keep the water circulating.

That did not make sense to me either. How do you bring the PH low enough to desolve Calcium without CO2? I tried to search for the manufacturrers page, but I cant find it. Anyone knows their web address?