Transfer Filter Media or Use two Filters?
I have a quick question about the best route forward to accelerate cycling of my new 40g tank. I am moving all of the fish and plants from a 10g to the 40g. The 10g has a Fluval C2 HOB. The 40g will have a Fluval G6 cannister. I since the plants, water, and substrate will be re-used the cycle should be able to be maintained. My question is about the best way to get the new filter cycled without putting stress on the fish.
The first option is to just move the C2 to the 40g tank and run both filters for a month or two to allow the G6 to get established with bacteria. Since the bioload will be the same, I assume the C2 will still be able to handle most/all of the ammonia. The other solution is to transfer the physical media from the C2 into the G6. This is more advantageous from an energy use, noise, and convenience factor. I am concerned that switching media will not cut it though since the C2 has very little bio media in comparison to the G6.
My primary concern is to keep the cycle established so that I do not have to start over or risk the health of the fish.
What method would be best in your experience? If it is helpful, I also have another dry C2 and several dry small sponge filters. Is there a third or fourth idea that would be better?