Hello people. I have a 20 gallon set up with 2 goldfish and I was wondering how to make a hood for it. I bought the empty tank second hand and its pretty good but it doesn't have a hood. I'm not sure what to do. I have a filter so i was concerned the filter would block a hood from fitting on properly. What I was thinking was put cling wrap over the top of it. I just don't want the goldfish jumping out. I have a bubbler in it (+ a lot of bubbles from the falling filter water) Would it be okay to put the wrap over it? My main concern was them not having air because of the wrap but if the bubbler remained in it would it be okay? *edit* A heads up request, please don't hound me about the tank size, I'm 15 and I'm not buying a 400 dollar tank to accomodate goldfish that have been suriving for 6 months. I'm just asking about the hood. thank you!