You are certainly talking me out of the Red Sea option. I already had one tank leak scenario (used tank I bought) and that was awful.
I couldn't do a 82 gallon setup (with the sump) - I'm trying to stay relatively small and keep water changes simple so that I can continue to use purchased sea water. I'm looking at these two right now, which both have approximately the same footprint:
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I like the IM one but I would have to figure out my own heater, protein skimmer, light, and ATO, and the shipping is very expensive.
The problem is that I already have a 40B freshwater tank next to my saltwater tank, and that puppy isn't going anywhere quick. (The multitank syndrome is real)