Some experienced guidance needed

Are there any measures that I can take to prevent fish from reproducing?

And what do u mean by the blue balance in terms of the light bulbs?
 
Here is an article on the Banggai for husbandry, etc. http://www.reefs.org/library/talklog/f_marini_020799.html If you don't want them to breed then by the same sex (2 males, 2 females) They are not the easiest fish to sex to begin with - you look at the jawline.

With regard to the "blue balance" when you use and actinic with a MH light, the MH may be more white to yellow depending on the Kelvin rating of the bulb. Typically a 10000k MH bulb is almost white and the actinic will add blue into the light spectrum to balance it out. Hope that helps.
 
Sorry, I accidently made a math error in the demensions of my tank. Im going for a: 20.2 x 20.2 x 32.32(height) acrylic, approx. 55 gallon.

Considering that should i make any alterations to my list?? And one last time thx for answering my questions.

Tahitian Moon Sand 40 lbs.
Fiji Foundation Rock 35 lbs. + Fiji Standard Live Rock 45 lbs.
Skilter 400 Power Filter + Protein Skimmer
ViaAqua Titanium Tube Heater 300W
Coralife Lunar Aqualights Compact Fluorescent Strip Lights 24"
Hydor Koralia Water Circulation Pump 3
Seachem Prime Water Conditioner 100ml
Instant Ocean 50 Gallon Mix
Instant Ocean Hydrometer
Saltwater Master Liquid Test Kit
Python No Spill Clean 'N Fill
SEA-LAB Automatic Replenisher 2.2 lbs Block
Ulti-Nets 10x7x27"
Feeding Syringes 6cc and 35cc
8 Outlet Power Center
Acrylic Safe Mag-Float? or just Snails?

FISH
1 Banggai Cardinal Fish
1 Royal Gramma Basslet
1 Flame Dwarf Angelfish
5 Spiny Star Astraea
Trochus/Nassarius Snail?
 
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