My tank has been up for a little over 3 months and the coraline algae is now really starting to show up. It seems to especially like the submersible heater, powerhead and mag float because it all over them.
14 gal biocube salt
1 orange zoo polyp colony, 2 toad stool (small), 1 umbrella leather (large), 2 pulsing xenia, 1 star polyp colony, 7 blue mushrooms, snails, pep. shrimp, 3 blue legged hermits, 2 onyx percula clowns