I agree. Its hard to do consistent large water changes. Thats why dosing, equipment for nutrient export like skimmers and such are needed. If it is feasable the large water changes weekly would be the same as smaller tanks. I had larger tanks and was just to much to maintain for me.Picos are awesome and the biodiversity on the coral plugs alone with the coral’s own biomes are enough to keep them thriving if you’re good about feeding them to keep them happy. Larger systems just don’t balance out as well. I also put corals in first now and have learned where to tweak to make it work but it definitely takes a lot of work and attention in a large system to be able to do effectively.