This morning I went to re-wet Ernies substrate. I put Ernie in his bath, and started pulling out everything onto a towel as I normally do. To my dismay, when I pulled out the grapewood, I saw tiny white, fuzzy, dots appearing on the underside [where the grapewood sits in the substrate]. MOLD! Gosh I was so upset. Luckily the pieces under/near the lights were okay. I salvaged 2 of 6 pieces I had, and also the 2 fake plants I have, that are mounted on pieces of grapewood. Did anyone else have this problem? What can I do so that they won't mold? Do I have to abandon grapewood altogether? It looks so good in his enclosure!..It looks pretty barren in there now =/ Should I just stick with rocks instead? Or will fake plants [i.e. from Michaels Arts & Crafts] without the grapewood attached be a better option?