When my new viv is ready (in a couple more weeks) I plan on stacking my current glass viv on top, which will require using a couple of strong supports. The obvious choice is something like 2x3 SPF lumber; it's strong, smoothly finished and cheap. However, I know some people have reservations about using such woods.
As long as I choose nice, dry pieces (i.e. not oozing sap) and leave it to stand for a few weeks, is there really any reason not to use it? After all, it won't be going inside the viv itself.
PS. I also just read this about SPF:
To get the wood closer to a usable state, most of this wood is put into large dryers for a period of "kiln-drying" which reduces the moisture content to an acceptable level for use. This kiln-drying produces a more consistent material than if the wood had been simply allowed to air dry naturally.
https://www.thespruce.com/how-to-use-spf-lumber-3536900
And what about Pine snakes (Pituophis melanoleucus)?!