Plecos seem to be the most common algae eater's around where I live. I have been reading on here that the common pleco can get massive. Is that the kind that walmart and other LFS sell(they all look the same)? I got one with a 10g that's about 4"(now it's in my 55g)that looks like the ones sold at these stores(I don't have any pics).How long would a "common pleco" take to grow from 4" to full size?Any help would be appreciated...