Are you setting your white balance for 10,000 Kelvin, or using an auto/preset level? You may need to dig into you setup menu to see if you can set the white balance as a specific degrees Kelvin.
Oh... and to retain the under water look, if you figure out you can set the white balance above, then set the WB to something *slightly* lower than 10k. anything lit with light higher than your set white ballance will come out with a blue-ish cast... the key is to experament to find exactly the tipping point between looks like shot underwater, and why did you pour a bucket of blue paint into your tank. :p
20Gal - 6 Harlequin Rasboras, 2 Triple Red Cockatoo Apistos , 1 BN Pleco
10Gal - 1 Orange Flash Cockatoo Apisto, 2 Amano Shrimp
20Gal - 13 Juvie Cockatoo Apistos... mostly Triple Reds
55Gal - Dry-Docked... wetness coming soon... I hope...