I've previously used what I now believe was silica sand labelled as "horticultural sand". I convinced myself this sand was OK after soaking it in distilled water for some time and verifying that the resulting TDS was acceptable. So far, I've had 100% success with this method based on the one time I tried it
Zach7286 wrote:Could anyone share any insight as to how you can tell whether or not the sand you've bought is acceptable?
If it is silica sand, it is fine. If it is not silica, then it's probably not fine.
Thanks to both of you for the tips! Ha I think my convo with the Home Depot employee went something like...
Me: Is this silica sand?
Him: all sand is silica sand
... which I took to mean that it was good for use, but maybe I should have said "pure silica sand" or something instead (I'm now wondering). In any case, I'll probably just buy a new bag that's labeled more explicitly for the remaining 10 seeds that I'd purchased. I actually might start a new thread later on soliciting more general help in troubleshooting what might have gone wrong with this first batch. Thanks again!