* The Duetto is no longer manufactured, Post #14 explains the work-around for modifying the Fluval Nano filter.
To modify the Duetto multi filter to perform as a surface skimmer.
I had a few of these filters when I decided to add CO2 to a 20t. Lighting was bright in this tank, 360mml PAR at least, from a large window, as in the full length of a south facing wall, 7floors up, bright light, with two T5's over the tank. For high CO2 demands such as this, I used 2 x 1 gal. diy yeast generators. I used only one successfully for some time, but maintenance is easier with two.
For the reactor, all the parts are interchangeable for both Marinland filters, so I scavenged the DJ100's larger impeller to use in the DJ50's smaller filtration housing.
Tools for this project are;
First:
Horizontally, as in...
To modify the Duetto multi filter to perform as a surface skimmer.
I had a few of these filters when I decided to add CO2 to a 20t. Lighting was bright in this tank, 360mml PAR at least, from a large window, as in the full length of a south facing wall, 7floors up, bright light, with two T5's over the tank. For high CO2 demands such as this, I used 2 x 1 gal. diy yeast generators. I used only one successfully for some time, but maintenance is easier with two.
For the reactor, all the parts are interchangeable for both Marinland filters, so I scavenged the DJ100's larger impeller to use in the DJ50's smaller filtration housing.
Tools for this project are;
- needle nose pliers
- a flat head screwdriver
- any drill, auger or power drill
- and one insert coupling, (little black thing that comes with the filter).
Be resourceful. Crush off an old air stone ceramic cover (using the little plastic thingamabob inside)Or, just stuff the air hose in the opening.
First:
- This modification allows water to flow in the direction you want, positioning the filter's intake vent parallel to the water's surface as the filter attaches horizontally against the tank. This allows the pump to work as a surface skimmer and/or allows CO2 to gas off in a case of EOTD or when yeast is gassing off CO2, but the pump is turned off.
Horizontally, as in...
The filter's suction cups are designed to be placed on either side of the filter with just the removal of two punch outs. Use the screwdriver to pry off the top of the lid and remove the tabs. Then, move the suction cups from the original position to their new home, allowing the filter to be used as a surface skimmer/aerator. Of course, if the filter already faces the way you want the water to flow and the suction cups are were you need them for the surface skimmer to work, move on to the next step. :untroubled:
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