I currently don't have a pic but my 'low' maintenance system is mainly because of my Liter Meter III. I do skimmer cup cleanings 2-3 times a week on my SRO unit that I love. Outside of that I do manual dosings of Calcium, Alk, and Mag.
The LMIII does top off of my lime water from a 44 gallon brute in my basement. Top off is set to 7.25 Liters a day and maintains sump level perfectly. I also use the LMIII to do automatic water changes. I currently do 8 Liters a day so it automatically pulls water out and puts new SW in. Does this over 150 different intervals so it keeps system more stable should levels on new Saltwater not be the 'exact' same params...I love this system and am awaiting another LMIII to automate my dosing.