guidance

hello all, i was hoping to get some guidance. i have an IceCap AIO 45 gallon. I’m going crazy trying to find a place to put my ORP and pH probe. the tank has a 5 chamber area in the back. the set up right now looks like this: [media basket] -> [skimmer] -> [return pump] <- [UV...

I know there are so many ways to set up an aquarium. I feel a bit overwhelmed! Here are the things I know I want a 75gallon saltwater tank. I currently have a 20 gallon and have had it running for about a year and a half. I have 2 old 75 gallon aquariums but one of them is being used for my...