Quick question about RO/DI units
Hello,
I've been using only tapwater purifier to do my water change/top off water etc, and my tank is doing okay so far.
I know by using a RO/DI unit can save more money for replacing the cartridges because they last longer.
Anyhoo, I am just wondering: is the RO/DI unit really that great which will make a significant difference on my tank?
thank you all!
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Yifan917
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