So when money allows (hopefully soon), I want to setup a tank for an O. briareus. The tank will be somewhere between 60-70 gallons depending on what I can find. I was hoping to do a sump less tank. Disregarding "the water will be more stable," is there any reason why I could do all HOB stuff? I was just going to use a Reef Octopus BH1000 HOB skimmer and an Aquaclear HOB filter to run some carbon just incase he inks. If you look at the intakes, they're both relatively small, so I could just put some gutter-guard over them so he couldn't get in. The big problem is octoproofing. How would I go about octoproofing the tank? I'm assuming I need a lid, and I read that its good to put an acrylic lock (forgot exactly what its called) on the lid so he can't push it open. Am I missing anything?