Brown sand and Bubbles

[BC_Grl]

The colour of this thing is nearly a rust colour. The 2 pictures were taken with 2 different settings on the camera.
1- with preset w/b to account for the blue colour from the light

2- set to auto colour for w/b


This is a 90 g tank and we've been running it since November. Here are the water parameters:
SG-1.025
pH-8.3
NO3-0
CA2-400
ALK- 1.94 meq/L; 5.4dKH
PO4-0
NH3-0
NO2-0
Hope this information helps. Thanks!