Yep. What happens is that it is so efficient that it out
competes the bacteria on the outside of the rock and sand,
so that denitrification dos not take place as well inside
of the rock and sand.

PS don't mention to Stoutman that I mentioned the word
"denitrification" heheheheh :-)

Wayne Sallee
Wayne's Pets



Susan wrote on 9/18/2006 5:57 PM:
Thanks Wayne. Are nitrates the problem using one of these type filters?

Susan
"Wayne Sallee" wrote in message
ink.net...
Those are wet dry filters, and unless you are going with big eaters, you
are better off with a sump instead of a wet dry filter. People have come
up with a variety of sump designs with glued in baffles and such, but my
suggestion is to use a regular fish tank and don't drill or glue in any
thing. Then it is completely versital, and can even be used later as an
aquarium. I like using live rock rubble for filtering out the bubbles.

Wayne Sallee
Wayne's Pets



Susan wrote on 9/18/2006 4:39 PM:
I'm looking at combining my 29 gallon and 46 gallon fish/reef tanks into
a 75 gallon fish/reef tank. I saw these two sumps but can't decide which
would be better for the 75 gallon tank:

http://www.petsolutions.com/Small+Pr...076024-I-.aspx

http://www.drsfostersmith.com/Produc...1&N=2004&Nty=1


One is a Pro-Clear mud sump and the other is a Megaflow sump filter. Any
opinions on which way to go??

Thanks,
Susan