Marine board or HDPE Sheet for aquarium bottom?

[IronMan72]

Is one better than the other to use under the rock stack in a glass bottom aquarium?

Marine Board
HDPE Sheet

 

[Ellery]

I would stick with something that is food grade just in case of leaching. I've ordered cutting board material for kitchens and stuff.

 

[Haffs09]

I don't think you can go wrong with either choice. I have 1/4" starboard in the bottom of my tank, and I'm pretty happy with it.

 

[john1979]

May I ask why you would put a board lime this at the bottom of your tank? What's the benefit? I just have sand - is that OK?

 

[Haffs09]

I have a bare bottom tank, so I wanted something to protect the bottom glass in case there was a rock slide or from something else falling directly onto it.

Is it necessary? No, it's all personal preference.

 

[solRNY]

I don't think you can go wrong with either choice. I have 1/4" starboard in the bottom of my tank, and I'm pretty happy with it.

i am using 1/4" black acrylic, it is very flexible, afraid the corners will flare up underwater, was wondering if your 1/4" starboard is rigid?

 

[block head]

http://www.reefcentral.com/forums/showthread.php?t=1810999

this guy used limestone tile and silicone. looks sharp

 

[Haffs09]

sol - I have 1.5" x 3/8" glass bottom bracing around my tank's perimeter. The starboard is recessed within it and as I look at the 1/8" gap, everything looks good except one corner of the tank. At that corner, the starboard is flush with the bracing, so it must have risen up 1/8". Unless you look for it, you would never know that.

When I first set the starboard in the bottom of the tank, I had a few rocks two feet from each end of the tank. That, coupled with the MP60s (one on each tank end) at 100% caused the edges of the starboard to raise ~2" from the tank bottom.