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Christople 01-30-2012 10:11 PM

Freshwater refugium?
So today I thought, if refugiums work for salt wihy would they work for fresh, granted I don't know how they work in salt, although I have a idea on how. Even if what I am about to talk about would it even be a good idea? Would sand in a HOB filter be a amazing Biological filter. If the sand stayed out o the impeller and what not, isn't that how refugiums work? I will experiment with it and see with my extra HOB filter.

Nubster 01-31-2012 12:42 AM

I think a fuge on a FW tank could be a good idea, but just sand in a HOB does not make a fuge. You need biomedia, which sand is not good for (it is, but I don't think it would be in this application), and fast growing low demand plants. I would do something like lava rock and a big clump of moss if you r extra HOB is large enough to do this.

AbbeysDad 01-31-2012 07:48 AM

Maybe if you had a very large tank and were thinking of a sump instead of a canister...But it seems to me that a deep sand bed and lots of plants in the main tank would be as good or better.

Sand in a HOB would seem like a bad idea as the sand is gonna wear the impeller very badly.

If your thinking HOB bio-filter, Seachem Matrix, De-Nitrate or bio-max would be a better way to go. (I have one AC70 filled with just Matrix, using a Fluval sponge pre-filter on the inlet tube).

Christople 01-31-2012 05:57 PM

I have both lots of plants and a deep sand bed, also a awsome canister filter, just looking to add that extra oomph. And I think that would do it, I could have sand and lava rock of smething like it in there because it is fairly large.

Maxillius 02-01-2012 07:04 PM

I would make like half wet dry with c nodes or so and the other half an algae scrubber shown here

Christople 02-01-2012 08:21 PM

I would want it to HOB though. I will be designing it in my note pad today.

brokenrules69 02-03-2012 04:41 AM

well first of all how a refugium works in salt water tank
its basicly macro algae which is basicly SW plants wich absorb large levels of nitrates with are every harmful to corals but in a FW tank nitrates arnt a big problem especially in a planted tank
a deep sand bed in SW allows bacteria and more importantly the small "critters" that also filter the water
what a refugium is. is a REFUGE for the macro algae and critters that would be preyed upon in the display tank and a place to put a DSB with out having ur volume of water being removed as in the main tank a DSB would displace around 10 gallons of water in the tank
and you would need another light for the fuge

so to answer ur question is a refugium possible?? YES
will it be beneficial to the tank? probably NO


brokenrules69 02-03-2012 04:44 AM

this is a "DISPLAY REFUGIUM" doesnt do anything to the tank maintenance like in a SW but it does look nice

Freshwater Refugium? - Tropical Fish Forums at the Age of Aquariums

Christople 02-03-2012 08:34 PM

Not every one can afford spending their for one and money for the other with plants. Basically what I am aiming for was a HOB that dramatically increases the Biological filtration. Which I designed but I have no way to manufacture it, any ideas on how to do that.

zof 02-03-2012 08:54 PM

How about tearing apart an existing HOB and increasing the holding chamber to allow for more filter material, if you want to get fancier add baffles to direct the water. The right container and some plastic weld should accomplish this, otherwise its off to design and cut an acrylic container and use a power head to supply the water flow. If you want quick and dirty upgrade of an HOB then just fill the back chamber with the ceramic material.

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