That sounds like a good plan. I also agree with the pool fliter sand. I used play sand in my rbp tank and I'm not real fond of it. I have been sucking it out a little at a time as I vacuum. I plan to replace with pool filter sand.
jp80911;3045943; said:or you can try 3M color quartz. more expensive but you have more color options.
http://solutions.3m.com/wps/portal/3M/en_US/ColorQuartz/HomePage/Products/Crystals/