Lighting diffuser AKA egg crate is not a structural member as it does not "distribute" enough weight to make it worth mentioning. Place some 2x4s on the floor in a rough outline of a four foot tank. Put a piece of plastic light diffuser on top of the 2x's. While you watch the plastic light diffuser, have someone step on the middle of it. See how much it bends? It's not carrying load--it is transfering it directly to the bottom glass (which is rigid enough to transfer it directly to the perimeter on most glass tanks--which is where all the weight is actually transfered to your stand).thought placing egg crate is just as much about distributing weight to the whole bottom of the aquarium
This is the correct concept to understand for why to choose to add it to your tank--to prevent scratching and pitting if you drag or drop your rocks etc.....as it is keeping the rock from contacting it directly
That is correct! It's not about proper weight dispersement, but keeping large rocks from focusing 1 point with their full load and the load of the others. By placing them on the eggcrate, this is dispersed throughout an area of the tank, and risk of damaging the bottom is lessened a good amount.eyezak said:The egg crate is used IMO so the rocks do not pit/scratch the glass bottom and to keep the rocks at an even level.Sand/gravel keeps moving especially when you have cichlids digging/sifting around the rock,so the egg crate will keep the rocks from becoming uneven so they don't fall.As nick a pointed out egg crate doesn't distribute weight all that great. I'm a poet and didn't even no it
So, do you realize you just completely contradicted yourself right? What part of;teqvet said:That is correct! It's not about proper weight disbursement
isn't weight disbursement? You even used the word disbursed to describe what it does...keeping large rocks from focusing 1 point with their full load and the load of the others. By placing them on the eggcrate, this is dispersed throughout an area of the tank and risk of damaging the bottom is lessened a good amount.