Coral reefer Past President BARcard Apr 20, 2019 #21 rygh said: Tumbling GFO definitely results in fine iron particles, which turn my skimmate dark colored, and I can see it on the bottom of the cup. Never seems to bother anything though. Click to expand... I have never noticed this before. How much of a rumble do you give it?
rygh said: Tumbling GFO definitely results in fine iron particles, which turn my skimmate dark colored, and I can see it on the bottom of the cup. Never seems to bother anything though. Click to expand... I have never noticed this before. How much of a rumble do you give it?
