In my opinion, this is one of the questions where, you're damned if you do and you're damned if you don't! Bigger is better, but not always. For example, check out the Buy/Sell section. Tonnes of people dumping their systems! They are either upgrading to bigger ones because they started out too small, or just outgrew what they initially thought was "big enough". Or, they are getting out entirely because it is either too much work, they're bored, or whatever. My advice would be to get whatever your time and money can afford today since you are uncertain what your future reefkeeping endevour is going to look like.
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