My tank has been running for a few days now. I read that you aren’t supposed to run carbon while a tank cycles, so I’ve had the sock out of the sump and not using it. Should I add it (empty) to reduce the waterfall effect of the water dripping down the empty opening? I also have the heater set up running long ways at the bottom of the sump. The sock will likely touch the bottom of the heater. Is this an issue? TYIA