i have this
70 watt led
only had it on since Saturday and i swear i am noticing huge changes already(might all be in my head). Switched out from a 42watt cfl @ 6500k which was not allowing macros to grow and giving my slow cheato/mangrove growth.
it will need some time before i can say anything for sure but the red macro went from little pieces laying on the sand to standing up looking better between saturday and mon.