^ I get the same "is that saltwater" comments often as well. On the whole, I would like to see this hobby grow to rival Asia - right now it is still quite frustrating trying to find quality equipment and interesting plants at reasonable prices. I think there are a lot of potential converts in the high-tech Reef keeping hobby, many have never seen a nice planted FW tank and they may bring some new ideas in.
I also agree auto-dosing, auto-water change systems, etc will be the next wave of standard equipment (or perhaps just hoping).
Style-wise I am not really sure where you can go - different things will surely come in and out of style. Seems like the white sandy fronts are turning to more gravely looking sand, perhaps black sand fronts will find more acceptance in the near future? All it takes is a new Japanese name that means "place rocks in black sand" and bingo, a new style would be born.
In terms of huge shifts of interest, from Dutch to Nature to ??? - I suspect that will see some more artistic talent move into the fringes of the hobby, i.e. Biotopes, Palundariums, Fast Flowing River Tanks, etc... and we may well see the next big thing come from there.
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