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Good morning everyone! I have been having my tank for 5 years, but due to some algae problems abd being abroad for longer time i didnt get to dive that deep in. Finally got to catch up on corals a bit and id like to get some more fish, but im unsure which ones. Its a 425l red sea, so total...

So I have a 125g tank and was wondering if I should have a uv sterilizer if I quarantine my fish and fallow my tank. And if so, what wattage would be ideal as well as flow rate for parasites and flukes for my tank. I would assume 20 watts with a flow rate of around 125 gph? Also what are some...