[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Aquatic Plants Digest V3 #654
At 03:48 AM 11/19/98 -0500, you wrote:
Subject: Tex-Blast in Bay Area?
Anyone know of a source for 1-2 mm Tex-Blast (or something similar) in
the San Francisco bay area and/or east bay?>
I've used a product which is used in drinking-water well installation. It
is "filter-pack" sand and is almost pure silica sand of nice roundness.
The sizes are available as "screen sizes" which specify the sand which
passed a certain screen size and was held on the next (eg. 10-20 Colorado
Silica sand would be held on a 20 wire-per-inch screen but would contain
only particles which passed a 10 wire-per-inch screen). I use 8-12 when I
install wells (depending on the aquifer materials). You can get the stuff
from Well Drilling Supply or Drillers Supply type establishments. I find
the cost per (for an admittedly large, 100-pound) bag to be pleasantly low
($10ish) compared to LFS prices. You can use the extra in your garden to
increase permeability or to top-off containers with attractive light
colored sand. I use it to keep the silt out of my outdoor pond when I
repot my hardy waterlillies in the spring. This material is largely inert
leaving you free to add what you want to obtain your desired result. Hope
that helps.
C. Black - Hydrogeologist, Seattle