Nanoreefnewbie 2012 nano contest entry

[fishoholic]

Originally Posted by nanoreefnewbie

Its was used from mature system bought from guy with rock

Did you wash the sand really really well? Old/used sand causes tank crashes due to the excess of nutrients it traps in it. If you didn't rinse it I would remove it all and rinse it out until the water runs clear. The sand will cause nitrate (and other) issues if not cleaned. When my boyfriend moved his tank 2 years ago he used a 1" layer of the old sand and it caused his whole tank to crash, he lost 2 rubbermaid containers full of sps, all his zoas and fish