I was wondering if i could use some of the reptile decor they sell at petco or other pet shops in an aquarium do you guys think it'll mess with my water chemistry? I wanted to add some more hiding places for my GT and they have what looks like hollowed out logs cut in half i think that would look good in my tank but i don't want to risk it. Also i'm also thinking of getting him another tank mate he's all by himself in a 90g right now what else should i add? i was thinking a con and a bristlenose i really don't want to overstock. thanks