Started 30 gal 1/11/12. All water parameter's are perfect and everything is thriving. Last 2 weeks sand started looking funky. Looks bad now. Got brown strands everywhere.I have never cleaned the sand. Thought that's what CUC is for. I vacuumed gravel in a freshwater tank for 11 years. How does it work with sand? Won't you just suck it all up?
129.2 KB Views: 84