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Watch the potassium nitrate dosing. As you increase potassium your nitrates also increase might be part the the reason you have 160 ppm no3. Imo 2 months with no water changes is not good for a reef tank and is the main reason your trace elements are so low. Small weelky water changes replenish trace elements and export waste. Your alk is a little high I shoot for about 8 dkh. Sorry but dont know what a Dsuny light is so I have no idea there. LED? Watts? Type of LEDs and what specturm combo?
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