How to setup a 20 gallon long reef tank, NO water change test

EVERYTHING I USE IN MY TANKS ON ONE PAGE: https://www.amazon.com/shop/ricksreef CurrentUSA Orbit Marine LED: http://amzn.to/2qCoWlG Eshopps Overflow box AEO19000: http://amzn.to/2q4faWI SC Aquariums SCA-301 protien skimmer: http://amzn.to/2q4aDnh Finnex FugeRay LED: http://amzn.to/2q74Ts6 Hydor Koralia 240 Nano pump: http://amzn.to/2rCFbO7 update on the tank and sump. Been about 2 months since I did a water change. I see what algae is growing if any.