If your tapwater is high in silicates like mine it will get thru the RO/DI unit - I found this out myself the hard way even use a 1 micron element - added a silica buster + chamber before the DI and now no issues.Well if it is a silicate issue it will eventually go away on its own. There is no way to tell how long it will take though. The diatoms need to eat all of the silicate up, and then they will die off
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