Did you get the hatch to close all the way?Petco Employee: That's a big tank how many fish do you have?
Me: One Yellow Eared Slider.
Petco Employee: I hope you have a truck
Me:
Yes just the Yellow Belly going into a new bigger home. I always go with a filter rated way over the water amount and play with the media types until I get it right. So far no issues with smell but I have to build the stand still.Love a 75 gallon. That 1:1:2 proportion is just right. What are you planning to keep in it? The slider? I have an aquatic turtle over 20 years old in a 75. UV sterilization on an Eheim canister keeps it clear and smelling ok. Those turtles are the toughest thing to keep in terms of odor.