reef breeders photon

Ok so i am finally after waiting too long getting some reefbreeders. I have a 35 g 24×24×15 i believe thats right dsa tank. My question is the phton 16 is only $10 dollars cheaper tham the 24, could i get away with the 24 since it is bigger for whemever i decide to upgrade. The part im confused on is the 16 actually has more leds and watts than the 24 juzt wonder if anyone has any experience with this
 
If your mounting to the tank I would go with the Super-Lux. If hanging, I would go with the 16. The 24 is going to have a lot of light spillage. Just my 2c.
 
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