Here’s a few extra random thoughts for those thinking of putting together a Rainbow tank. These are my opinions and reflect what has worked for me.
Water flow is important. I run two Penguin 660R powerheads. If I turn them off, I notice a quick change in behavior. They slow down quickly and are not nearly as active. Many Rainbows live in rivers/creeks, and the extra water movement keeps them in constant motion. You’ll notice a few sort of “fluttering” by in the vid. They are swimming through the current. The two Rena’s may seem like overkill, but I’ve always believed in over filtering. You can also clean one filter without disturbing the biology of the other. Keeps things in a nice balance.
Know which Rainbows you want and have patience. Juvenile Rainbows don’t look like much. The Blue Rainbows in my tank looked like silver minnows when I bought them. They mature SLOWLY. It takes a while for the mature colors to develop. Most LFS’s don’t have mature Rainbows for sale. Do some research, be patient, and take the time to find what you like. I let my LFS know what I was looking for, and they helped me out.
Rainbows are very peaceful. I never have any problem with violence in the tank. I’ve had many tank set ups over the years, and the peaceful nature and vibrant colors make this Rainbow tank my favorite so far.
I feed mine New Life Spectrum, frozen brine, & frozen bloodworms. I have found the New Life Spectrum to be excellent in bringing out their colors.
My tank is all males. I know many would argue that it’s not natural, you won’t see natural behavior, etc. For me, it’s all about the colors. And let’s face it, the males are far more spectacular. I get plenty of “flashing” and color displays with all males.
Live plants. Get some. They look so much better, and create a natural looking environment. Also good for the tank biology.
When I got back into the hobby two years ago, I scoured this site for tips, and am thankful it was available. Hopefully this post is useful to someone out there.