There is.. When I got my glass I got the Starfire which I believe is a brand name similar to opti white. There is a lot less green coloration to it. It's expensive but IMO worth it.
The price is a little more, but if you go with just regular glass (float) you'll always have a greenish tint to the water. Who wants that? You might as well go all the way if you're going to do something like this. Looking good.
re -read the title. its 2500 Liters or for those who can't convert just under 700 Gallons. nice size to be starting on. wish my build was this size but I was limited by the size of the stand I already have. no sense waisting it