Getting that stuff makes your tank easier to manage, lessening the likelihood of failure.
but no, you do not need that stuff.
You need a tank, stand and light sufficient for growing the types of corals you plan to keep. That can be MH, T5 or LED. You need water movement, ideally through a sump, but not needed. Power heads do the job.
You need rock for filtration. Kind of important. You probably need a heater. Timers are nice to automate the lights. You need a power bar to plug stuff into.
You need something to mix new water in and a hose to move it around.
Nice to have items:
Sump to hold heaters and the skimmer you may want to use. Good idea, but not absolute.
Return pump to get water back to tank.
Drilled tank is nice, you can use hang on overflow.
Media reactors, for anything you may decide you need, assessed on what the tank is doing.
Test kits. Buy good ones.
Apex, ask for one for Xmas.
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Brad
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