I did the Tropic Marin ICP Plus test with the tank and RO water. I know the iron is high because I just found a rusty bolt on my light mount, which was swapped out, so that should be taken care of now, I hope. Also, they say my nitrates are very high, but when I use the HR Hanna tester, my nitrates are 15-20, which is obviously high, but not to the extent of what they stated. I also dose all for Reef 4 times a day at low increments. Also, anything that really stands out to any of you, please let me know what I need to correct.

but thank you for looking it over and responding