If the first reading you got was above the top color on the chart, it may be significantly higher than that number. Keep up the water changes. Are you using tap water or RO
water for your water changes?
Until recently, what has your water change routine been?
How long has the tank been running?
Lighting: You probably want one of the higher end PC
light systems. Try to aim for 200 watts, although it's undestandable if that's out of your budget. I think 2x65 is about the best you're going to find in premade fixtures, a 3x65 would be more ideal for the anemone.
The feather duster doesn't need much light. It eats small particles of food floating in the water.