Voted no because there was no restrictions in the question: SPS can grow fast and easy in a tanks where they requirements are met. Until then they are not easy, if include tank care time and not only growth, but retaining color too.
I had fast birdsnest growth, with loss of color, in 0.9 gal basic pico cube with enough flow, no filtration, living on water changes, wrong kind of light and manual dosing. This was sub-optimal and not that easy, full water changes and daily manual dosing with testing.
In the tank with partial water changes, biodiversity and better lighting (still below average for SPS, Nicrew saltwater LED), the rest is the same, some of them grow fast and maintain good color: montiporas digitata, setosa, mystic sunset. No more keeping birdsnest and flats that take too much space, small tank.
I had fast birdsnest growth, with loss of color, in 0.9 gal basic pico cube with enough flow, no filtration, living on water changes, wrong kind of light and manual dosing. This was sub-optimal and not that easy, full water changes and daily manual dosing with testing.
In the tank with partial water changes, biodiversity and better lighting (still below average for SPS, Nicrew saltwater LED), the rest is the same, some of them grow fast and maintain good color: montiporas digitata, setosa, mystic sunset. No more keeping birdsnest and flats that take too much space, small tank.