Okay so I've decided to go with a Calcium Reactor as oppose to dosing pumps. I've done some research and I know both have their pros and cons but I want to give the reactor a chance and see what happens. Since Im not really familiar with these and the different brands I wanted to see if you guys could help me choose one. There are 3 different ones that Im looking at so I will list them below along with price and everything included with each. GEO 618 Reactor w/Ehiem 1048 Pump Reef Fanatic Co2 Deluxe Regulator Reef Fanatic pH Controller Reef Fanatic 10lb Co2 Tank The only thing I would need to replace is a few hoses, a maxi jet 1200 feed pump and new ph probe. [COLOR=#ff4d4d]This is used and for 0 [/COLOR] Reef Octopus Calcium Reactor CR-5000 2x Co2 Tanks Regulator (unknown brand) [COLOR=#ff0000]This is used for 5[/COLOR] Korallin 1502 Calcium Reactor w/Eheim 1048 AquariumPlants.com Electronic CO2 Regulator 5 lb CO2 tank American Marine Pinpoint ph monitor and probe Toms Aquatics Aqua Lifter CarribSea ARM Coarse Media, Two 1 gallon containers plus a full reactor's worth Extra CO2 proof tubing Extra reactor pad Two reactor lids, one with ph probe port and one without. John Guest needle wheel effluent output valve, this is clutch! 1/2 full NeoMag Magnesium media ph calibration solution 1/2 full ph 7.0 and 10.0 [COLOR=#ff0000]This is also used and selling for 0[/COLOR] Im leaning towards the Geo or Korallin, both have better accessories and are almost complete.