Hi everyone, I am running a 55 gallon saltwater tank for about 7 weeks now. I used Dr. Tims the first 6 weeks and when the ammonia and nitrite hit 0 continuously, I got 2 baby clowns last week. I currently have a cannister filter in it with 40 plbs of live rock and live sand along with hermit crabs and snails. I do want corals eventually probably in a year when tank is more stable. I’m extremely intimidated by sumps (I bought the tank used and it came with the filter and used to be a freshwater so nothing is drilled). Is there an easy way to set up a sump? Do i really need one? I feel like its better for the long run which I plan to be. Just really dont know where to start. Should it be DIY or should I get someone? Please please any advice is appreciated as well as what you guys think the cost will be (I already have a RODI, heater, and protein skimmer).