purple frilly gorgonian help

[reefwars]

they dont share a sump i have moved into a newer tank as mine was getting old scratched and i was wanting the corner overflows i let the tank sit with sand and liverock from my established tank and swapping water through water changes and used prodibio then let it sit for a few weeks after test were clear i moved coral and moved fish over the following week

amonia,nitrite,phosphates-0
nitrates-20
salinity-1.024
temp- 78-82ish
cal-460

my nitrates have always been this high wish they were lower...