Cool. I wouldn't even worry about the above. BTW, I'm a rehab med doc (PMR). What part of the country do you live in? I'm a great resource for ALL things SCI:)) I'd start off with a softie tank and morph slowly into a LPS and montis and then hardy acros. I've been in the hobby over 25 years and have made plenty of mistakes. Learn from others mistakes and save money. It's a great hobby. The apex system is a monitoring system that you can also use to control devices (Not needed). Don't worry about dosers yet. Start simple and go small. Your DAD can easily test the water a couple of times a week (takes one minute). Start with watching the Bulk REEF SUPPLY Ultra low maintenance series on youtube. Also, what size tank are you thinking? From there, I can tell you what I'd do for a mixed primarily softie, lps, anemone tank. I wouldn't add acros for the first 4-6 months, and then is a long discussion. You will encounter a lot of strong opinions. There are many ways to skin a cat.