Hi all! I know some of you have probably used this material for this purpose but thought I'd share for those that have never heard of it. I'm in the process of converting my UNS90U to a reef tank (don't judge me!
) When i originally set up this tank I used marine grade plywood at about $100 a sheet between the tank and the stand and also as the floor of the stand under the sump. After 2 yrs the piece under the sump had some water damage due to minor spills. Even with a lacquer finish.
So in getting a new, slightly bigger sump built, I started thinking about materials, cost, and waste. A new 4'x8' marine plywood panel was out. All I needed is 31"x 22" and the rest would just sit outside wasted. So i thought of HDPE but it was a bit expensive in thicker sheets even cut to fit. A little more digging and I found Starboard. Same basic material that can be cut, machined, and drilled. Waterproof, salt proof, chemical resistant and UV resistant.
With wood supports underneath it, I only needed 1/4" thick cut to fit under the new sump. It's fantastic to work with and great for our needs. Use a router on the edges and sand it smooth. Viola! Can be had in multiple colors too.
Ditch the plywood y'all! This stuff won't warp, discolor, split, or de-laminate. It's also very reasonable in cost. If I'd found it sooner I would have used a piece as the top of the new stand I built for my 22g long.
Happy plant trimming!