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					Originally Posted by  Dearth
					 
				 
				I have eggcrate with mesh on top of my tank and already have had my fish break the eggcrate in 2 places and I think it is either my lubbocks of lawnmower Blennie doing the damage if the mesh wasn't there I think my cats would be having fish food literally 
			
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 I don't see how either of those fish could physically break eggcrate.  At all.  Unless what you are using is not the egg crate I own... As what I call eggcrate I struggled to cut with side cutters capable of slicing a finger off.  No way a fish would break  the egg crate I know of. 
As for the thread user ... Do you have any spaces that perhaps are cut around wires or pipes or something like that?   Maybe they found a crack.  
I forego eggcrate now and use a canopy about 8" tall.  I have not lost a jumper since.   Not even a wrasse in several years.   Short of loss while doing maintenance.  I failed to notice a jumper during extended maintenance.  Oops.