Well guys, I appreciate the opinions. The fella who set me up with the baby tears and aqua soil swears that HC is fine with .5 inch of aqua soil powder. Considering that I would've bought another bag from him had I decided to get more, I really appreciate his opinion, especially because he grows great stuff.
So, for now, I'm going to wing it and see what happens. If it all lifts up, so be it! Learning experience...for science!
I'll post what happens if anyone is interested. I plan on doing it HC only. I do, however, like the idea of slowly adding more aquasoil over time, as BeastMaster suggested. I think I might do that. Sounds like a good way to really anchor HC.
I actually measured the substrate and it's pretty much exactly 1/2 inch all over. So, it's time to see if an HC carpet can successfully be dsm-ed to last long term in only 1/2 inches of aqua soil powder.
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