Plywood topper to support tank?

[mrbacony]

I am looking at getting a different nano tank and want to use my existing 20 x 20 stand. I would like to get a peninsula tank which will fit width wise, but will be about 3 to 3.5 inches to long.
Could I get away with placing a sheet of 1/2 to 3/4 inch plywood on top of my existing stand to support the overhang?

 

[AFHokie]

Is it a rimless tank? If so, and it's only 3-3.5 inches total I personally would be comfortable with 3/4" plywood. A rimless tank will be evenly distributed across the plywood, just be sure you use a leveling mat. Also make sure you secure and center the plywood really well. And sink the screws all the way!! One screw too high could be disaster in the making.

 

[mrbacony]

Yes, it is rimless. Thanks for the input

 

[AKL1950]

Will the water volume be the same? I would be concerned about extra weight and whether the stand is designed for more weight. As far as plywood, Unless it’s got a waterproof surface, if it gets wet it might start buckling and create an uneven surface. The big box stores have shelving pieces that are waterproof which might work.

 

[mrbacony]

Yes, the stand is very stout. I would trust double the weight that is on it now. But the new tank is actually a tad less so should be fine. I will probably cover it with shelving liner or some other plastic coating to make it waterproof. Good point though. I was going to just paint it, but the addition of the plastic coating is a good idea.