Filling new tank. 48 ppm tds

[danieljames]

Filling a 75 directly with an ro/di. Cleaned the display with plain water. i have a small piece of coral skeleton holding the ro/di line down (only thing in the display). I checked the tds of the water in the display, and it's at 048 tds. Double checked the output water in a small container..002 tds. Should i be concerned for cycling rock?

 

[fgarvine]

nope. probably getting a tds from the tank glass and the piece of rubble. 48 not the end of the world. It will go down as the tank gets full. I f not -- water change will take care of contaminates. Cook away!