, it seems tex-blast was sand blasting product that appears to have been popular with aquarists a decade ago. there are many more choices available today, so pretty much any inert 1-2mm sandy gravel of the color you like will approximate the benefits of tex-blast in a planted tank.
two inert 1-2mm (no thicker than a nickel) gravels from Carib Sea would be;
Peace River Substrate
- Product #: 00832 (20 lb. bag); 00862 (50 lb. bag).
completely inert (reds and browns) freshwater
Ivory Coast Sand
- Product #: 00223 (20 lb.); 00253 (50 lb.).
buffers for Cichlids (browns and white) brackishwater
this 1-2mm size is a great compromise for those who like the look of sand(<1mm) have fish who like to dig a little, yet can avoid the compaction problems of sand by using something close to a plant appropriete substrate(2-5mm) grain size.
there are many other 1-2mm substrates around in black, white, any natural color you like. the pictures above are a darker than how the colors will appear in your tank.