looking for a uv sterilizer for a 120

same here. I heard that it's good for freshwater, but can be bad for saltwater in the long run since you need all kinds of bacteria for the tank to thrive..

Not bad .....your trying to run a 0 low nutrition system if your keeping sps....water changes and supplameting will add enough back in along with regular fish feedings...if your keeping any kind of fish load = good
 
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