new DIY 75 gal sump

I had gotten tank 4 free so i said what the heck might as well uprgade sump so far it is about a $60-$70 project for the most part i am done just need sand and to plum it into system ! It has 5 chambers macro algae, sand and rock, mangrove area, skimmer, last chamber random reactor/filter pumps and heater ! Here is a pic from right after i installed the baffles !