Hello all, im after a bit of advice please. Ive got a juwel rio 125 and have been slowly getting everything together for my first attempt at a high tech tank. Im not ready for hard scape or plants yet but have pretty much everything else. I was planning on setting up my filter and fe co2 to make sure everything works and try to get a stable level of co2 before I spend loads of money on the plants, as the reg and atomizer are second hand and there is alot of conflicting opinions on whether the tmc reg has enough working pressure for the inline atomizer to work. The filter is a jbl cristalprofi e1501, tmc regulator and up inline atomizer. Firstly, I take it the atomizer goes on the same pipe as the spray bar and the inline heater ( not purchased yet) on the other? Will not having a heater and having no lights on make any difference? Is it worth having 2 drop checkers at either end of the tank? Can I set up the filter without the media for this purpose? Is there actually any point in me doing this or is it a silly idea? Any help will be greatly appreciated.