Large bubbles even create openings in the algae for light to reach further down into the growth thus reducing dark areas. The more bubbles, the thicker the algae can grow. You can have as much air as you like, however 10 lpm per inlet (40 lpm total) is no problem, because the bubble rings which circle around the air inlets prevent large bubbles from escaping. It is the air bubbles which move water into the growth compartment and up the growth surfaces, and also supply carbon dioxide (CO2 in the air) to the surfaces, which allow algae to grow in the filter. Pumps that say they can handle 20 or more airstones, or pumps with 4 tubing attachments instead of one, are best.
And as growth fills the compartment, even more sound is absorbed.Ĭomes with 6 ft (180 cm) of quad vinyl airline, but requires a 4-outlet air pump, or two 2-outlet pumps, that can pump at least 10 total liters per minute (0.4 cfm), which small low-cost pumps cannot do. So while you may hear very muffled bubbling if the filter were next to your bed at night, you will hear nothing if there is any other activity occurring in your house. Lastly, the path that air has to take to get out of the top requires the air to first go sideways towards the foam, and then upwards along the foam this allows the foam to absorb any remaining sound exactly the way foam absorbs sound in a studio. And the 3/4" (19 mm) thick LED lid is filled with super dense polyurethane, which absorbs more sound than a rigid structure would, and much more than a non-sealed structure would. This stops virtually all sound from going sideways. The thick and heavy gauge plastic growth container is coated internally by even thicker and heavier Green Grabber textures, and is surrounded on the outside by 1" (2.5 cm) of closed cell polyethylene foam. Since the SURF4 does not touch the aquarium glass or sump glass, and since it's made of heavy material surrounded by foam, it is by far the quietest algae scrubber ever made as a matter of fact it's almost silent (the air pump is usually louder).
#San manico alage scuber full#
The SURF4 growth compartment is one full inch deeper than the SURF2 (3" compared to 2"), which further keeps all bubbles at the top, and bubble-free water at the bottom, where the water exits.Īnother feature which was highly requested was quiet operation.
The air then goes out of the top of the unit, quietly and with practically no salt spray, and the water goes down and out four holes in the bottom, without any bubbles remaining. This repeated rubbing of bubbles causes algae to start growing on the ribbons and textures freshwater grows thin stringy algae, and saltwater grows thicker, denser algae. The bubbles then circle around and around inside the growth compartment, rubbing against the ribbons and the Green Grabber super-rough rock-hard attachment textures as the bubbles rise up to the water surface. As the bubbles and water enter the growth compartment they rub the algae-attachment ribbons and get blasted by the super-red 660nm LED light. The SURF4 starts with four bubble openings at the bottom, where upflowing air bubbles (from strong air pumps, sold separately) flow up into the growth compartment and bring aquarium or pond water with it.
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