Coralife CA Reactor

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Dose anyone has Coralife CA Reactor and have a problem with the pump? I try to get few drops/ sec but it seems to work only few days and stop a dropping. I am thinking to replace a pump to maxijet and force to keep a water is running with 1 CO2 bubble / maybe 2 to 3 sec, so I dont get too much CA into my tank. Do you think dose this work or any solutions other than dump this cheap reactor?
Thanks