I wanted an extra tall stand for a 40 breeder (36x18x16) and I think I overdid it. I built it 36" tall, and now I'm concerned about the stability. I put it in place, partially filled it, did a preliminary levelling, filled it completely and let it sit overnight, and did the final levelling. The bottom is a solid piece of plywood. It's sitting on carpet, along an exterior wall, and perpendicular to the floor joists. I noticed motion in the surface of the water (filter turned off) when I walk within 5 feet of it, particularly in front, which would be the area along the joists between the exterior wall and the support beam. And I can definitely move it if I shove it hard enough. The 40 breeder is a pretty low and wide shape, but I'm afraid it's still too topheavy. Am I just being paranoid, or do I need to do something about it? My ideas are to cut up a square of carpet so the stand is sitting right on the subfloor, hopefully adding some stability. I really don't wanna destroy my carpet though, and I'm not even sure that would help. Or, I could shoot some screws through the plywood bottom, through the carpet, and into the subfloor, hitting the joists if I'm lucky. Any suggestions, ideas, or experiences with sketchy tall stands? Thanks.








