Originally Posted by acrylic300
Ok, I removed it after 24 hours (the water was clear). When I took the bag out I noticed it was leaching black fluid.
Is this bad?
Make sure before you use your carbon, you rinse it well in a good source water (using tap or poor water will only shorten the life of the carbon slightly, and can be leached back into the tank) to get off the "dust." This is what is going into your tank-the black fluid you saw, most likely.
I do not belive it is harmfull to the tank in a small amount to have that black fluid (carbon dust) enter that tank.