I use red sea trace elements and my corals love it I don't do water changes unless i really have to.
<a href="" target="_blank"><img border="0" src="//ws-na.amazon-adsystem.com/widgets/q?_encoding=UTF8&ASIN=B01MF63IJ2&Format=_SL160_&ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=mangeles-20&language=en_US" ></a><img src="https://ir-na.amazon-adsystem.com/e/ir?t=mangeles-20&language=en_US&l=li2&o=1&a=B01MF63IJ2" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" />