Join Date: Aug 2007
Location: Northern California
Cories emit too much ammonia for bettas to handle??? LOL...No, that's not true. If it was a tank that was still cycling then adding more fish (of any kind) will cause an ammonia spike. That may have been what happened.
I have play sand in 4 of my tanks. Make sure you rinse it very well. Don't make it too deep and you won't have any problem with anerobic pockets. About 1-2" is fine unless you have rooted live plants, then you may need it a little deeper so the plants can take hold. At water change time turn your filter off and run your fingers through it if you want to stir it. It will settle quickly.
150 Gallon - Mostly American Cichlids
135 Gallon - Angelfish Community
55 Gallon - Polleni Tank
20 Gallon Long - QT
10 Gallon - QT
75 Gallon coming soon!