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Old 05-08-2015, 06:12 PM
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Myka Myka is offline
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Here's some technical information about the skimmers:

ATB 840 Small (out of production)
Footprint with pump: 14 x 8"
Height: 21"
Body base diameter: 8″
Neck diameter: 3.75"
Pump: Eheim 1260
Water flow: 645 gph (without air), 264 gph (with air)
Max air draw: Up to 900 L/hr
Power consumption: 65 watts
Manufacturer tank rating: Up to 249 gallons

Bubble King Double Cone +RD3 Speedy
Footprint with pump: 14 x 11.5"
Height: 21"
Body base diameter: 8"
Neck diameter: 3.9"
Pump: Red Dragon 3 Speedy DC
Water flow: 1320 gph (without air), 793 gph (with air)
Max air draw: 1500 L/hr
Power consumption: 50 watts
Manufacturer tank rating: Up to 132 gallons

On paper, the Bubble King definitely leads the race. Especially with that whopping 1500 liters per hour air draw using only 50 watts of power. I like the small neck diameters on both skimmers - this was a significant factor for me since it's tricky to find a good skimmer for small water volume.

The skimmer bodies are VERY similar - the BK has a wine bottle shape and the ATB has a true cone shape. The bubble plate design is very similar - the wine bottle shape of the BK allows a slighter larger distance from the body wall to the top of the bubble plate component, where the ATB is slightly narrower at this point. They are the same height. The same base diameter. The BK shortens the body height in favor of a taller collection cup, thus the ATB has a taller body height. The standpipe on the BK is 1/4" larger than the standpipe on the ATB - likely to allow the significantly larger water volume to pass through. On the BK the outlet is positioned lower, where the ATB is slightly up the body wall - maybe there will be less microbubbles leaving the BK. The most significant difference is the pump - a $200 pump and a $700 pump.





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Last edited by Myka; 05-08-2015 at 06:21 PM.
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