So ive been sitting here thinking about my tank just about all day, and thinking that putting a calcium reactor on a 45 could be problematic due to excess CO2 and lowering my PH quite a bit, then I got to thinking about my old planted tank that I used to have......that ran a CO2 diffuser to grow plants faster. SO, im thinking im going to run my calcium reactor straight to a algae tumbler. My thought behind it is....if I run straight from the reactor.....it will give the water time to give off its CO2 and bring the PH back up and make the plants grow quicker due to excess CO2 what little there will be. I guess my question is, could I run the reactor straight to a algae/refuge area where the algae would suck up the excess CO2? and there be no problems?