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View Full Version : DSB for FW?


JoelNB
02/19/2009, 02:48 AM
(may be OT :o )

...to create anaerobic areas for denitrating bacteria to reduce the need for water changes. Does it sound possible?

rhoptowit
02/19/2009, 05:52 AM
you should go ask a freshwater forum.

jasonrp104
02/19/2009, 06:40 AM
I'm not sure about freshwater bacteria, but if there are denitrifying ones in FW, I'm sure it would work. You'd still need sifters for the sand.

SVTour
02/19/2009, 06:48 AM
Going way back to my FW days and thinking of the under gravel filters and vacuuming the gravel itself...all I can see is the sand getting really messy.

pjewett
02/19/2009, 09:18 AM
I have a 55 heavily planted freshwater. I've noticed that it needs less and less cleaning of the deep gravel bed that I have. When I went to clean the gravel a few days ago there was almost nothing...plants are eating it all..probably my huge Amazon Swords.

I have no sand (gravel stirrers)

JoelNB
02/19/2009, 04:45 PM
That too. I've also noticed dark areas at the lower regions of the bed. I just think I've seen a connection between the bed and nitrate production (using gravel).

I've picked up a 55 with gravel and I want to kick the freshies out of my 36 to use it as a refugium so I might combine the gravel from the 36 with that from the 55 for a deep gravel bed.

Oh, and BTW, no UGF.