id suggest dosing nitrates daily and or feeding more. you are starving these corals with a 0 ppm nitrate and 0 po4. turn off the skimmer and fuge if you have one till your dosing starts to show improvement.
dose the nitrates then test 10 minutes later, there are plenty of calculators out there to figure out how much.
Please see above..I have been dosing keeping it pretty steady at 10