Hi,
Oooo, a 30 gallon hex, that should be a lot of fun. Tillandsias can just be glued with silicone sealant to whatever you are trying to attach them to. With cork bark you can often just wedge them into the natural gaps and curves. As long as they are secure and can't move they will develope roots and attach themselves to the cork bark after a few months. All tillandsias that are gray in color need to dry out well between waterings or they will rot quickly.
Neoregilias and most of the others do best when they have their base wrapped in moist sphagnum moss and then are tied to a log or cork bark with fishing wire. The base of the plant needs to stay moist most of the time or the plants don't usually develope roots. You can also use little inch long sections of picture hanging wire that are bent into U shapes and kind of tack plants against the background. Post some pics when your done with the tank, I'm sure everyone would love to see them. Good luck,
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Devin
devin@amphibiancare.com
www.amphibiancare.com
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1.1 Dendrobates tinctorius 'Powder Blue'
5.1 Mantella aurantiaca
1.1 Mantella crocea
1.0 Ceratophrys cranwelli
0.1 Hyla chrysoscelis or versicolor
1.0 Bufo americanus
0.0.1 Salamandra salamandra
1.0 Ambystoma tigrinum
0.1 Chamaeleo calyptratus
0.0.1 Chrysemys scripta
0.0.1 Chrysemys picta belli
1.0 Terrapene carolina triunguis