If you are going to use 'river sand' or pool filter sand as top soil over your base, I would strongly suggest you put in some MTS (Malaysian Trumpet Snails). They do keep the soil well aerated.
speaking from experience, i had a 3 footer with 2inches of base made up of laterite (bolstered with root fertilizers) covered by an inch of river sand.Worked wonders for my crypts etc . Of course with lots of MTS!
Last edited by Binks; 3rd Sep 2008 at 23:58.
Reason: spelling
"I grow old, I grow old. I shall wear the bottoms of my trousers rolled"
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