Dosing ,,Most ppl dose alkalinity and calcium supplements. Keep a tank stable is the key to succeeding. Once you start getting corals and coralline algae they start to use these supplements . that is where dosing starts. SPS corals (hard coral) will use up these supplements faster ,there are other things ppl dose as well but those 2 and magnesium are the top 3 ppl dose. I would do some reading on them before dosing. you should also have a test kit for everything that you dose in your tank
UV ,i dont think its needed doe a reef tank(corals) i havent used mine in 3 years
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