Many times (and I have thought the same thing) people say.. "I know I shouldn't get this fish ____ BUT I will be getting a bigger tank in the future...." People get plecos that will get to 18" , rainbow sharks and RTS in small tanks, silver dollars and bala sharks, and many more species that they "know" will outgrow their tanks. Often these fish need a 4 or 6ft tank pretty much to themselves, in the long run. I feel this is how so many LFS ended up with these big fish that they can never sell on to anyone. Is it OK to do this to start, even if your intentions are genuinely good and you want to get a bigger tank in time? Thanks for your thoughts! Yeoy.