no offense but those lights are a joke, a 16.5ft roll IS NOT over 3700 lumen, i sell leds in my store just like this and theyre so dim on 12v its funny, ive cranked them up on a 16v powersupply for a few seconds and thats what it looks like they did for the picture plus its on a white surface so you can see the "lumen" of the light.
spend the money on good lighting and better filtration, those are 2 things you never want to skimp out on especially if you want coral, dont gamble with your tank because you will ALWAYS lose.
those lights are just like the zombie craze now, people think they can slap "zombie" on things and sell them for twice as much, its the same with leds, they think they can slap "aquarium" and "saltwater" and "xxxx lumen" and sell them off overpriced ESPECIALLY on eBay.
dont be a chump, just my $0.02.