This SURF2(tm) or 2x show an earlier stage of growth on top, and a more filled in stage on bottom. RAINs are for saltwater only. Reach in and grab some
This SURF2(tm) or 2x show an earlier stage of growth on top, and a more filled in stage on bottom. RAINs are for saltwater only. Reach in and grab some
Looks like the heads of two fish, close together and frozen in time, with so much fresh living algae to eat that they got stuck.
This SURF2 or 2x shows one of the upflowing bubble holes in the middle of the algae; these holes allow light to go deeper down into the growth.
A SURF2 floating in some extra space in a saltwater sump.
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