Eggcrate for rock

[jonn46]

I have worried about pressure points or small areas of the rock putting all the weight in one small area on the glass.

[Aquattro]

Originally Posted by jonn46

I have worried about pressure points or small areas of the rock putting all the weight in one small area on the glass.

Not something to worry about unless the rock is the size of a small car. Any rock you use will have either a fairly large single spot or multiple points of contact.
As an example of the strength of glass, I tried to remove a center brace once with a hammer. It was unbelievable how hard I had to smack it to get it to break. Unless you're throwing rocks into the tank, you have nothing to worry about

[jonn46]

Interesting, maybe I will go that route on my new one, thanks!

[Reef Pilot]

Yeah, I had to consider that a couple years back when I was rearranging the rock and sand in my tank. Listened to the various opinions, but never made any sense to me use the eggcrate. So I just went with rock on bare bottom and a very light sand bed. Worked out well.

[Doug]

Originally Posted by Snappy

Eggcrate under sand & rock sounds to me like a recipe for a nitrate build up.

I dont get that one Greg?

[Aquattro]

Originally Posted by Doug

I dont get that one Greg?

I suppose, technically, it could restrict water movement, although I haven't found this to be the case with 2" of sand or less. My NO3 has always been 0.

[tang daddy]

I heard some guys mention fijicrete, is that a cement??

[Doug]

Originally Posted by tang daddy

I heard some guys mention fijicrete, is that a cement??

http://www.canreef.com/vbulletin/sho...d.php?t=103405

[Doug]

Originally Posted by Aquattro

I suppose, technically, it could restrict water movement, although I haven't found this to be the case with 2" of sand or less. My NO3 has always been 0.

If under the sand I dont see how. Exposed, yes I agree.


Perhaps I will just stick with bare bottom. Always worked well for me so far. No eggcrate....no sand.

Still going to use to much rock compared to you guys....

[Aquattro]

Originally Posted by Doug

Still going to use to much rock compared to you guys....

At your age, we expect you to be stuck in your ways