Hi all .Hey cmaxwell39 the tanks are all plumbed together.I use a mag 18 & mag 12 to keep it all running . The 65 gallon conner is going to be a sea horse tank. It all goes from my 120 main tank with 2 inch drain to the 55 gallon fuge/sump then plumbed with 1 inch thin wall for the returns to the 120 ,55, 36, 65 gallon tanks.I have a calcium reactor to keep up the calcium around 460. Ph 8.3 all others at zero. I do a water change 0f 55 gallons once a month. Hey fishkid13 if you need any help plumbing your tanks let me know.It just takes time to get them to look like this. So take it one coral at a time. hey tell your mom the tanks take less up keep if there all plumbed together. the more waterthe easer it is to keep it all in check. Hey nycbob i put a lot of main in all my tanks . there are times i let it go for a few days here and there. but then i get right back in to it.