which light should i purchase?
 

so should i purchase an 8 bulb tek elite or would this be overkill on a 75 gallon tank? if it is i was thinking of either getting a fiji sun 6 bulb, aqua medic ocean light 6 bulb, or a current usa nova extreme pro 6bulb. keep in mind the tek doesnt come with a fan, splash guard, or lunar leds like some of the other models. so is it worth sacrificing 2 bulbs for other features? i still wanna be able to keep anything i want in the tank.

Keep in mind that if you want absolutely best and stunning SPS color you will need to change T5 bulbs every 6 month or sooner.
I have T5 x 6 bulbs fixture and I don't change bulbs until they burnt out. SPS growth and color is there but far from stunning.
The reason is that i noticed that if i change every 12 month or keep until the bulb is burnt makes no difference in SPS color and growth.