I just added the really fine powder sand.
![Image](http://img.photobucket.com/albums/v520/batang_mcdo/Sand009.jpg)
![Image](http://img.photobucket.com/albums/v520/batang_mcdo/Sand008.jpg)
the sand is so fine water turned cloudy, when will be the best time to transfer my cories.
i'm going to add some old aquaclay into the sand. also will be moving some sponge filter into the 15 gallons.
ayrtoninst wrote:Corys need a fully matured tank to thrive and be happy.
I'm not sure I would be putting them in straight away unless you are using mature media and 50% matured tank water.