high nitrates

Question/concern on my nitrates. I have always had high nitrates in my tank. They range from 20-80, even when I was went fallow due to MV (just feeding a sun coral). I feel good when they stay at 20! Did a 8% water change yesterday and they were at 80 right after and 80 this morning. I'd like to...

Hi reefer friends! My tank is currently having a dKH of 11, which i believe is on the high side. This is due to the salt, Red Sea Pro that I am currently using, and that I am doing WC every 2 days to reduce my nitrate level, that is at 40ppm. Please advise if i should lower the dKH, and if so...

So... For the past few months all of my LPS corals have been dying in two of my tanks. I cannot for the life of me figure out what is happening. I've lost thousands of dollars worth of rare hammers, torches, elegance corals, gonipora, chalices and acans. The acans have been dropping heads...