I'll check them out, so later it you want to do a reef system could you use the same LED's just more of them
Yes you would need more of them and they would have to be mounted on a heatsink. In large numbers (enough for sps) LEDs can produce some heat from the circuit board they are mounted on. As this heat is not transferred to the tank, it will shorten the life of the LEDs so a heatsink is a must to keep them cool. HTH!