I'd advise against the pine and cedar. Again, nasty resins. If i may suggest, maple and oak are decent. Buying wood from retailers, even aquarium made wood, is overrated. When they're selling DW for 10$, i can get it for free from my backyard. Or theres some that's cheap in lovely patterns and hues in some smaller fish stores. Make sure you boil any wood to get rid of tannins. Big problem with one of my tanks, terrible for the plants. it turns the water a murky yellowish color, obcuring lights for the plants. also dont ever bleach or use soap on the DW. For advice, if you want to attatch plants to the wood, use an elastic at the roots, and dont buy those plants pre existing on the wood from stores. they use a foamy mesh thing to hold it in. Some fish will eat, choke and die on that stuff.