I use big size gravel instead of sand, because sand was making water very hard and damage the water pump... also it was a headache to clean the pond with a lot of sand in it... and when it rains drops push sand into the pond....
also I think it looks beter, the sand make it look like desert... and the gravel can be washed with the garden hose with out taking it away...
hope you like it, tell me what you guys think...
Rick



