Live rock on eggcrate, sand or on bottom?

[Aquattro]

Originally Posted by jtbadco

I never said it would for sure happen. I don't know everything. IMO it's not worth the risk. Feel free to do what you like.

Sorry, I didn't mean to sound harsh, but that is one scenario that can't happen. Both the rock and the sand are softer than the glass, and either will give before the glass.

[lastlight]

Originally Posted by intarsiabox

So what happens if one grain of sand gets between the egg crate or oyster shell and glass?

Oh SNAP!

[Reef Pilot]

Reminds me last year when I was installing a new light fixture for a bathroom. It was on a full wall mirror, and got the old one off, no problem, and the new one fitted on nicely. But then I was tightening (just one more little bit of a turn) up the rear back plate that was against the mirror through a drilled hole to the wall,...I heard this horrible snap, and a big crack ran out from under the back plate.

Had to pull off the whole mirror which was glued to the wall, piece by piece, and using a hammer to break more pieces to get it off.

That was not a good day....

[lastlight]

Originally Posted by Reef Pilot

Reminds me last year when I was installing a new light fixture for a bathroom. It was on a full wall mirror, and got the old one off, no problem, and the new one fitted on nicely. But then I was tightening (just one more little bit of a turn) up the rear back plate that was against the mirror through a drilled hole to the wall,...I heard this horrible snap, and a big crack ran out from under the back plate.

Had to pull off the whole mirror which was glued to the wall, piece by piece, and using a hammer to break more pieces to get it off.

That was not a good day....

How did sand get back there?

[Aquattro]

Originally Posted by lastlight

How did sand get back there?

lol. This example more closely demonstrates flexion across an uneven stand. Which would break the glass, possibly.

[cale262]

I’ve put the eggcrate down in my tanks with deeper substrate/sand. I'd like to have the BB benefits in my next build but don’t like the look and reflection of a glass bottoms. I’ve also read a few threads were people either come home to or wake up to a flood resulting from a cracked bottom glass (albeit few and far between)…So to err on the side of caution and for esthetic reasons, I am likely to place a black piece of acrylic siliconed to the bottom of the tank which will eventually be covered in coralline…it may just be me, but for some reason I find the coralline grows faster on the acrylic than the glass.

[Aquattro]

If you wanted to put something down, the starboard product is often used. (cutting board material).

[Reefer Rob]

How about a light diffuser panel like this. It might actually look cool. Darn, why didn't I think of this a month and a half ago.

[Reef Pilot]

Originally Posted by Reefer Rob

How about a light diffuser panel like this. It might actually look cool. Darn, why didn't I think of this a month and a half ago.

Hmmm, yeah, I like that. At the least it might keep my live rock from slipping around on the glass. Wonder if HD carries it. I am sure I have seen it somewhere. Thanks for the suggestion.

[Aquattro]

I'm still not sure how live rock is going to slip around on the glass...it's rock, it's just going to sit there. I ran BB tanks for years, and never had rock slipping around...