[mr.wilson]

Originally Posted by MitchM

Hi Tony,

I'm following Ron Shimek's guidelines as best I can that I found here:

http://www.ronshimek.com/deep_sand_beds.html

Particle size distribution:

0.1-0.5 mm = 80%
0.1-0.75 mm = 15%
1.2-1.7 mm = 4%
1.7-2.5 mm = 1%

Here's a link to his discussion about it:

http://forum.marinedepot.com/Topic70...hlight=dsb+0.1

I am trying for a 4" or better depth.

Mitch

Ron Shimek's sand formula is a good one, but it leaves out one important factor... scratching acrylic. I use Special grade with some extra shells and coarse sand mixed in. This way you are less likely to stir it up and get it stuck in cleaning magnets and it won't scratch the bottom of the viewing panels as much when you use a plastic scraper.