The display measured .500ppm PO4 tonight. I refreshed the bucket.
Day 1 - 2/25/18 - 1.410ppm - Start
Day 6 - 3/02/18 - 0.843ppm - Exhausted 5gal, refreshed bucket.
Day 10 - 3/06/18 - 0.500ppm - Exhausted 5gal, refreshed bucket.
And for visual people...
Keep in mind before running this I did as close to a 100% water change as I could and also ran some phosphate media. It didn't dent the phosphate. At this point I have used about $.50 worth of seaklear and have dropped the PO4 by almost 1ppm in 10 days.