just picked a sweet bargain off craigs list on a 29g with stand, whisper 30 filter, some big stones and some decorations all for $25. i think its a pretty good deal. but the tank they left filthy! its got that green algae like residue on it thats seems impossible to get off. so if anyone one knows of a good cleaner to get rid of this i would really appreciate it. cuz i wanna get right too my shelly tank project.