128-Gallon 48″Lx24″Wx30″H Flat Back Hex Aquarium Setup supplement Partial water changes are the

Partial water changes are the easiest way to lower the nitrate in a saltwater aquarium

Nitrite (NO2-) is produced in the aquarium by the biological filter

Model QC424224 Size 42″x42″x24″ Gallons 130 Weight 148  Side Walls 1/2″ Top and Bottom 1/2″ Filter Size 32″x16″x16″ # of Overflows 1 Overflow Plumbing in each overflow 2-1″Drain 1-3/4″ Return

For most reef aquariums

128-Gallon 48″Lx24″Wx30″H Flat Back Hex Aquarium Setup supplement Partial water changes are theModel FBH482430 Size 48x24x30 Gallons 128 Weight 144 Side Walls 1 2 Top and Bottom 1 2 Filter Size 30 x 14 x 16 # of Overflows 1 Overflow Plumbing in each overflow 1 1Drain 1 3 4 Return