Amici;608344 wrote: Do you want to paint it? You can use Krylon Fusion as long as you let it fully cure. If not then I think your colored plastic wrap is a great call.
Painting it is a great idea (although it's nearly impossible to get paint off of acrylic). I doubt that colored plastic wrap would block enough light to prevent algae growth.
I wrapped my calcium reactor & extra media chamber as well as all clear plastic lines in aluminum foil to keep the algae out/down. On the reactor, I left a strip so I can see the media...