Jeremiah, I like the idea of dyed black concrete. I would hate sand and the resultant mess when there was moisture on the floor. I would probably be way more willing to put down an inch or so of some crushed white colored stone in the summer months. Then water on the ground (and small dirt particles) could be washed down the drain under the stone. In the winter the stone could be used as additional thermal mass, or simply stored elsewhere.
Maybe just a thick layer non-toxic paint instead of dyed concrete.
I like the white gravel idea. I've been kicking around in my head ways of covering a dark surface in the summer to avoid heat absorption. That seems like the best one yet!
You could use paint with some texture in it. You'd have to find a very uv-resistant paint though.
An even better way of storing heat would be phase change materials.
what are your thoughts about phase change materials?
I figure something like gravel would allow water to drain through as well in the event of a spill or leak. Not sure how it would be for walking. I'll have to keep asking around.
I don't have any special thoughts on them, other than that they store a lot of heat. I wrote up the theory behind it here. You might find some out there with a google search.
I'm working on a PCM product that freezes at about 55 degF. Not ready yet though.
My thinking is an angular aggregate (like crushed limestone) set to a minimum pack-able depth might work very well. While a smooth floor surface might possibly allow a more free flow of liquids on their way to the drain, the benefit of textured concrete might be less movement from the crushed stone. Brushed concrete might be easier and cheaper than a textured paint. Also, the brushed concrete texture would probably last longer than an added texture. I like where this is going...
has anyone considered using geothermal floor heating and cooling. the reason that I ask is that in winter it heats the floor and in summer it cools the floor. it is a lot cheaper than natural gas and more environmentally friendly then using wood or gas to heat.
Do you mean geothermal using a heat pump, or subterranean heating and cooling using air?
Some how all this takes away the "hobby" aspect of aquaponics. But I'm just as guilty as anyone.I see an idea and I have to try it.