Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I did something like that for a 72 gallon bowfront. I used 6 x 6 to support the bowed front. But the legs are shorter. I built a box that matched the tank frame and the legs do not touch the tank. The box sits on the legs.
I got a great deal on...
Western Red Cedar, kiln dried, select tight knot, rough.
My boss ordered some special cut sizes for an arbor (patio cover) and the lumber yard messed up. I got enough 6 x 6, 3 x 3, and 3 x 6 to make several tank stands. (With a few small scraps for use as dog chew toys)
I built them all with the basic plan of 4 pieces on top (rectangle the tank sits on), legs cut shorter so the box sits on the legs. The whole thing would stand up by itself without screws (until the wind blew it over). Screws and brackets are all inside, not exposed. However, they are all open style, no doors or walls on any of them.
I used different methods of sealing them. Some with lightly tinted stain that made the color richer (left over stain from refinishing my hardwood floor) but still allowed the grain to show. All were sealed with clear polyurethane. The rough finish of the wood ate through the brushes and pads I used to apply the stains and sealers.
Here is the plan for a larger tank. Again, note that the tank sits on a box which in turn sits on the legs.