09-06-2010, 10:48 AM
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Airstone in sump
Thank you for the compliments.
I have an airstone in display and refugium for oxygenation. I have always had them for the last 25 years in all tanks.
I try to replicate the reef environment as close to what I see and read. I have them to move water also.
There is a domino damsel in the refugium, so I have had since the setup started.
The tank and the refugium were cycled separatly and have seen no ill effects from having it.
The water is brought up from bottom of refugium by the air bubbles, so powerhead is not needed.
The refugium is 15 inches deep and 17 gallons.
Salt creep is very little.
My overflow output is below water line by 3-4 inches so no water surface disruption except bubbles from dropping into tube from display.
There is a glass cover over return water section.
I believe the surface needs to be broken not just moved around for gas exchange to take place.
The best time to dive is when there is no swell or water disruption but when the water is moving the fish activity goes up I believe. This is translated by myself into water commotion will be best for my aquarium friends.
I do not understand why microbubbles are so widely disliked except they are not good for viewing.
I am more interested in replicating the natural environment and caring for my aquarium friends.
I usually have about 4 powerheads in main tank. Water movement is naturally occurring on all reefs, so are microbubbles.
I do not have a lot of coral. I am curious about the bubbles affecting the coral in some way?
Is there a problem with the coral and microbubbles?