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 :)

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

Eggcrate on bottom?
 

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.

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.

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

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

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....:lol:

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