And once things are out of whack--recovery can be long, if not impossible (RE Triton). Read through D2Mini's most recent build as an example.
I would say the biggest change has been the automation technology, not LEDs per say. When I left the first time none of it existed, and I didn't have the funds to pay for it. Between dosing pumps and controllers you can set up a nice system that only requires a few tests a week and periodic filling of top off and salt water change reservoirs and adjusting dosing rates.
But the basics are the same. I second Berlin method as still the best.
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Back after a 13yr hiatus--much to my wife's dismay. Though she sure loves looking at the tank and feeding the fish!
Current Tank Info: Reefer 450 seed tank for the retirement 315gal Reef Savvy build.
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