I posted recently that my husband and I installed a rainwater harvesting cistern.
What I didn’t explain is why we chose to go with a black tank.
I love basic black: in clothes, shoes, and kitchen countertops, among other things. But, other things I wouldn’t buy in black. Cars, for example. And I didn’t want a black tank.
No, I wanted to buy a rainwater cistern in a lighter color because I knew that black absorbs heat, and the last thing I wanted was a huge heat generator right next to our newly spray-foamed, insulated house. (In a colder climate, I would have felt differently, but in Texas, there are so many more hot days than cold ones.)
Plus, I would have preferred a lighter color from a design perspective, to help it “fade into the background” a little better. Who wants to look at a huge black thing in your yard?
It ultimately came down to functionality and maintenance. We were told by the tank company that black tanks are much better at limiting the amount of light that reaches the interior of the tank. That’s a good thing because light-loving bacteria or algae will proliferate if giving the opportunity.
We didn’t want that to happen because it’s not like you can open up the tank and scrub the interior clean, so we felt that buying black was the right option for us.
Time will tell if we made the right choice.