I recently setup my biocube 32 and have white lines all the way up the tank. I used instant ocean salt with RO/DI water and mixed to a salinity of 35ppt with a heater. Had it mixing with a pump and wave maker for several hours. Could this be due to the Caribsea sand I added? I’m afraid to scratch the tank so ive been using the flipper with a credit card and it’s slowly coming off but not easily. Just want to make sure I’m not doing anything wrong! TIA