It works for me. The water clarity is incredible. You can really see the difference over night.
Another way to see the difference is look at the water as you take it out when you do a water change. Without it, in your white bucket you will see how tinted your water is. Then the next time you do a water change with ozone, you will see no to almost no discoloration in your bucket. You have to see it to believe it.
Remember the clearer the water the more light your corals will get.
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 150 gallons SPS REEF 2 - 400w - 20k bulbs
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