Would have swore the Danube blue Is purple if you didnt say it was a specific blue I'm always getting into discussions with others what color we really see.
The Danube blue is definitely blue-violet...Baja blue is like a cobalt blue. Danube is mid tone, Baja deep tone. Mixing sand colors is a science with unexpected results at times. You can even pick a color and mix it with either white or black sand for effect. I originally had the Apple Green sand in Patch's tank. It looked good against her pink. She loved it at first but it eventually proved a bit too bright and stressed her (she stopped going down to the bottom) so I mixed in both Baja blue and Carribean Blue (main tank color) to darken it. She was fine after that. However that mix is a bit on the dingy side and hides muck. Once you get into mixing multiple colors (3 or more) you can get a muddy result. This is the artist in me talking, lol.
Mixing sand colors is super easy. Some of the coolest effects simulate substrate in nature.
black/green = moss
olive green/ yellow = moss
green/teal = algae
dk green = grass
brown = mud, or river sand
red/brown = leaf litter
dark red = clay
olive/brown = leaf litter/mud
black/white = gray sand (volcanic)
3 color mixes work if you use black and white sand together with 1 color. If you really wanna get fancy and simulate nature you can mix gravel with sand.
Gray sand with black gravel (cuban cichlid, black nasty, dovii)
Gray sand with brown gravel (same as above, albino oscars)
Brown sand with black gravel (bichirs, tiger oscars)
Green sand with brown or black gravel (barbs, tetras)
White sand with brown and/or black gravel (most anything)
Black sand with red or dark red gravel (Midas, Devils, Parrots)
Dark red sand with black gravel (Midas, Devils, Parrots)
Black sand with white gravel (imagine a starry night cichlid with this combo!) or reverse it out, white sand with black gravel
Black sand with dark green gravel (most anything)
Gold yellow sand with black or brown gravel (sa cichlids)
Black sand with brown gravel (sa cichlids, some central)
Just sayin'. A few ideas.
