Cover for Aquarium (Setting up outdoors)

[chrisfoerst]

I finally have my first system almost ready to start. It's based on a 75 gallon aquarium that connects to two half barrels. I have designed the system with mobility and transparency in mind because it will eventually be moved to an elementary school. In the meantime, I am trying it out in my backyard. Can anyone recommend a good way to cover the aquarium so that it doesn't get too much algae growth from direct sunlight? Right now, its completely exposed and I don't have a greenhouse or any other place to put it. Thanks!

[keith_r]

i used a plain blue tarp to cover my tank. as well as some bird netting to keep the fish from jumping out

[urbanfarmer]

The reflective gray tarps might reflect more light, but even shade clothe will work (it won't collect water like a tarp would).