Ethos Fish Aficionado Joined May 11, 2005 Messages 3,401 Reaction score 0 Location ES Aug 24, 2005 #1 What are they exactly? Are RUGF expansive? Do they require alot of work? Why would you use one? Would you only use one for a river tank?
What are they exactly? Are RUGF expansive? Do they require alot of work? Why would you use one? Would you only use one for a river tank?
OP OP Ethos Fish Aficionado Joined May 11, 2005 Messages 3,401 Reaction score 0 Location ES Aug 25, 2005 #2 bump, anyone?
B beblondie Fishaholic Joined Jun 17, 2004 Messages 469 Reaction score 0 Aug 25, 2005 #3 reverse undergravel filter kind of as its named its reversed instead the water being pulled down thru the substarte its pushed up thru it -Anne
reverse undergravel filter kind of as its named its reversed instead the water being pulled down thru the substarte its pushed up thru it -Anne
