Newfishgirl May 12, 2023 Share May 12, 2023 Can I remove the top rim on a 40 gallon and have it not ruin the integrity of the tank? I’ve done it in smaller tanks, like 10 gallons, but the water volume in a 40 gallon makes me a little nervous. I don’t like the top rim as it makes it hard for items like a protein skimmer, etc to fit properly. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
BowieReefer84 May 12, 2023 Share May 12, 2023 No, don't do that. Link to comment Share on other sites More sharing options...
Kathryn Lawson May 12, 2023 Share May 12, 2023 I've done an old 20 long for freshwater that has been fine for 2+ years now, but I don't know that I'd go bigger than that. My 29 tall (rims still intact) sprung a leak on its own a few weeks ago, and cleanup was a huge headache Link to comment Share on other sites More sharing options...
AlanM May 12, 2023 Share May 12, 2023 I would not do it. There are rimless 40 gallons and higher, but they are specifically designed to hold that way with thicker glass and higher tolerance on the seams. It would probably hold for a while, but it's a big risk. Link to comment Share on other sites More sharing options...
Newfishgirl May 12, 2023 Author Share May 12, 2023 Thanks everyone! I’ll just cut the inner lip to make items fit Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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