Top down lagoon style w/ rubbermaids, any advice?

sfsuphysics

Active member
Pop pulled his 300g (rough guess) rubbermaid he used as an outdoor pond, I decided I wanted it. Now what to do with it.

The direction I'm leaning towards is for a type of (not-quite)refugium or lagoon style semi-reef, but what I don't want is just to have a large sump. Now I plan on having this in my sun-room/greenhouse area on the back of my house where my sump for one of my tanks currently is, but basically I'd like to light it with natural sunlight.

Some ideas I had, sand bed, maybe a remote sandbed for my main tank, but I realize that it will be a helluva lot of sand.
Seagrasses & mangroves, perhaps other types of macroalgae as well.
Surge driven, since there are no bulbs to splash onto, nor any sideview to worry about bubbles, maybe use a siphon surge since it seems the easiest to tune.
And hooked to my main tank, perhaps the overflow from my sump can be what powers the surge.

However I would like some input from others who have done something similar, maybe those who have set up greenhouse coral growout tanks (I do not want to do that however :D).
Temperature, both hot and cold, hot from the sun (even if it is filtered), cold from the night (sure this is San Francisco but low 40s can turn a tank into a mess.) Simply fans and more heaters? Or could I somehow insulate around the tank to keep it a bit more stable?
Light - too much? not enough? what are we looking at with sunlight?
Creatures - I'm thinking as many clean up crew critters as I can to deal with potential algae problems, maybe some herbivore fish (ones that don't eat seagrasses :D)
Anything else I'm potentially missing?
 
Hey Mike,

I have a friend that runs an coral propagation "greenhouse" in Ohio, Than Thien, that uses 300 gal. rubbermaids for his main tanks. I would visit his website, www.tidalgardens.com , and/or get into touch with him. He has a very nice set-up going now.
 
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