Orp is a tricky subject. I once dug into it and really I don't bother. As long as water quality is good. Nitrate phosphate. Cal alk mg. it's all good. Some coral like high flow some like less. Same as light. I grow sps and a few lps. Due to high light and great water my sps out grows lps 10 to 1. Try moving pices to different areas as long as you have good polyp extension then let time do its thing. Also IMO ozone is good but not a huge factor for me. Orp can and will drop and raise through out the day.
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