4x54 T5 - Bulb Selection/Placement?

So I ordered my mom a 4x54watt Coralife Lunar Fixture that comes with the moonlights. Currently she has the 2 bulb, and wants to keep things like clams and such and cant because of the current fixture she has. She has a standard 55gallon tank with 1-ATI Blue+ and 1-ATI Aqua Blue Special.

I was thinking of putting:
2-ATI Blue+
1-ATI Aqua Blue Special
1-ATI Purple Plus

Does that sound good to you guys? If not what bulbs do you suggest? How would you place these in the fixture?

 

Excellent choice, I have the same in my fixture.

Position from front to back for a whiter look
Blue +
Aquablue
Purple +
Blue +

switch the Purple + and Aquablue for a bluer look

 

same bulb set up I am running.

 

what kind of corals are you guys keeping with this bulb setup?

 

I have SPS and clams with mine, in a mixed reef. I have some SPS that are 3/4 of the way down the tank. The fixture is almost 11" above the water line.

 

Nice, what size tank is that on?

 

Standard 75 gallons, 20" tall

 

ok, thats good to hear. She wants to keep some simple SPS and it sounds like its possible, plus clams and things of that nature

 

2in10, do you have the light fixture hanging?