So I know this is going to sound weird but I have been dosing Tropic marin all for reef for about 2 weeks and today I tested my nitrates and phosphates and they were both 0. Now the weird part for about a year my phosphates were always 0.10 - 0.17 and my nitrates were always 20-25 ppm . Dose all for reef act like carbon dosing? Also don't want my levels at 0 , thinking of going back to BRS 2 part. Any ideas? Thanks