it is a burden to keep clean. that large center piece weighed 60 pounds. the only way to keep it clean is to bleach it. a week later it looks like crap. taking a 60 pound piece in and out of a tank was insufferable. all of that and i wanted to go with rocks that are more natural looking. every video i've seen of rift lakes has large bulky gray rocks.Why did you decide to take out the holey rock? I'm just wondering since I started my peacock/hap tank with holey rock then changed to big black rocks months ago and last night, I went back to holey rock. I'm not feeling the holey rock though so it might not last too long.