Needed a stand for my two 27gal tankz...so pounded this one out in about 3 hrs or so...haha...took longer to stain it than it did to actually build it.
I think you may need some more support under the tank platforms... those screws could snap.
and a 45 deg brace to keep it from twisting. Just lookin out for ya bro.
i would actually put it in a different way. but it looks like you'll need some more 2x4 to support it on 4 corners. the 2 srews per pillar might hold it up for a short time but not too long. better safe than sorry.