But rimless is built with thicker glass and made to withstand the pressure without the rims support so I guess you would have to research it more and kind of take the risk. If I was you I wouldnt fill it up in your house. I would fill it up outside with freshwater and then let it sit for a week or so. Then check it for bowing if it dosent burst. I just realized the friend I got the info from has turned his fish tank into a turtle tank before he did it and didnt tell me.