Yes I have 3/4 ply on bottom with 2x4 supporting. I wanted as much weight distribution as possible. Not just around the perimeter.
On top of those 2x4s sits a piece of 1/2 ply, then 1/2” foam and then the sump. I wanted the sump raised off the bottom
The whole bottom is caulked and sealed so if there is a leak it will hold nearly 60g of water. Also having the ability to shop vac out any spills and run a fan to dry everything.
The same pattern/spacing is done on the top braces with 2x6s with 3/4 ply on top. Then 1/2” foam and then acrylic tank.
I built the stand tall. 40” tall, 24” tall tank. So top of tank sits at 5’4”.
It’s a pain to work on because I am only 5’5” and need a step ladder to basicly lay on top to reach the back corner of the tank

On top of those 2x4s sits a piece of 1/2 ply, then 1/2” foam and then the sump. I wanted the sump raised off the bottom
The whole bottom is caulked and sealed so if there is a leak it will hold nearly 60g of water. Also having the ability to shop vac out any spills and run a fan to dry everything.
The same pattern/spacing is done on the top braces with 2x6s with 3/4 ply on top. Then 1/2” foam and then acrylic tank.
I built the stand tall. 40” tall, 24” tall tank. So top of tank sits at 5’4”.
It’s a pain to work on because I am only 5’5” and need a step ladder to basicly lay on top to reach the back corner of the tank
