This is my first sump set up, I've heard the argument of rock in the sump and detritus build up in the past. I do have a bit that I try and clean out with water changes, but find the filter socks do help with this. I also have some lr in there already, smaller pieces that I couldn't make work in the dt. I have an 86 gl sump so loads of room.
I've treated the tank with chemiclean for cyano and lights are now off for 3 days. Once the cyano clears I'm going to rearrange the rocks, likely power heads as well. when I change out the water this weekend, it'll go in bins so I can pull the rocks out to work in the tank.
The way I initially laid out the rocks was to cover up the corner overflows and tried to have an open scape in the middle, but I love the islands so am going to work towards that look.
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