The key to keeping sps, for rookies. These are general rule of thumb....
- Enough light for the coral that's actually in the tank. You don't need 4000w of light if your starting out, just enough for what's currently in the tank. As the tank become fully stocked, you might think about upgrading. I think it doesn't make sense to run so much lighting for the animals you "might" have 4 years down the road.
- Same goes for flow, it will change as the amount of corals you stock.
- "Stability promotes success". Keep all parameters as steady as possible. That means temp, ph, cal, alk, mag, po4, no3. These parameters will work to fight against you, away from stability. We use all kinds of automated systems such as skimmers, and reactors, dosers, electronic monitors, etc, to achieve stability long term.