How do I get my po o4 down. I don't run GFO and my po4 are running at 0.08 with Red Sea test kit. I have used a some thing to bring it down and can not get it down below 0.04.
Water changes will help but you have to find out the cause of excess nutrients. Most likely cause is from overfeeding. Be carefull that all food is consumed in 2-3 minutes and food never hits the bottom. If all else fails you might want to try carbon dosing.
Doing a bunch of WC in a row will bring em down. If you don't plan on running anything. But .04 is not a bad number at all. Home tank range should only be .03, so your not to far off of that.