ciclid substrate

any one use, or have pictures of what these look like in a tank, trying to decicde what to put it the bottom of the 125 that i got, thanks

http://www.bigalsonline.com/BigAlsUS/ctl3684/cp18302/si1379478/cl0/caribseariftlakeauthentic50lbs

http://www.aquariumguys.com/riftgravel.html

also any pic of other ideas, or link to other products would be great, i put blue rock in my 55 and cant wait to change it out when i redo the tank and put the cichlids in the 125 thanks for the help
tim

bump, mainly interested in the one bigAls has, thanks, tim