I want to turn my garage into a fish room. I’m building one of those DIY racks with 3 shelves. It will have the filters on the bottom rack and tanks staked 2 high. I want 2 freshwater (axolotls in one, planted tank in the other) 2 brackish (figure 8 puffer and green spotted puffer) and 2 salt water (one LPS one SPS) I’ll be using canister filters for the fresh and brackish tanks but i want sumps for the reef tanks. My question is can I or should I use one larg sump plumbed up to both tanks some how or should I get 2 slightly smaller sumps for each aquarium? I know LPS required a lot more care like dosing regularly and really clean water, but I figured if I maintain one large sump that way it definitely won’t hurt the SPS reef and they might actually thrive.