Karin I sent you this as a pm, I am pasting it here also

I am on my third one, this one seems to be holding up checking it with my meter.

Positives: Grows GSP very well on my 65 along with one type of SPS and only draws like 54 watts while lighting up my 65 (36" x 18" x 24" tall) fairly well

Negatives: very low PAR levels, most SPS do not do well, nor LPS, or mushrooms for some reason? I am guessing because it does not cover the entire lighting spectrum is why it does not grow most corals. The other negative is the fact it is uncontrollable. Most people think LEDS last forever, that is not correct, they drop 3% every year, and like with Sols or Radions you start them out at 70 to 80% and can increase each year to maintain your PAR levels.

If you are buying one for a FO only tank/GSP tank you should be okay. If you are buying used I would check it with a meter to make sure the light intensity has not dropped off. With the other LEDs coming down I do not see the Marineland as a great buy(mine came as store credit)