I have a 55. If I were doing it over again - and I probably will be moving it, so I might - I'd do as Ace says and drill it with a calfo. I have T5s, and they are OK. I even have some hardy SPS growing with it. I'm still "playing" with the Hiatt carbon thing on my 215g, so I'm not ready yet to commit to that technology - but I might soon...