I LUV Black tank...but it all depends on what you have. Black works with Pearls and Spangles or Bright color fishes. So if you have a Black Nasty or Cuban it may not work (just think of how your regular pleco looks like on black. Jack Dempsys are dark but it brightens their spangles.
Pleco looks unspectacular
Bright Colors (well she's also breeding mode)
Comparison with my Flowerhorn..First in my plain 55 and second in my darken 120
Pleco looks unspectacular
Bright Colors (well she's also breeding mode)
Comparison with my Flowerhorn..First in my plain 55 and second in my darken 120