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- Nov 5, 2018
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So I am using 6 stage RO/DI system and water is at 0 TDS. I checked ammonia right out of the blue pipe of RODI unit and ammonia is at exact 0. I am restarting my tank and there is no fish in there. What will a complete cycle mean for me? I would like to wait and put fish after I finish a complete cycle. And how do you maintain PH without any additives. Feel free to suggest anything else in addition to my question here. Appreciate any help. Thanks