Well, ladies and gentleman, I have just spent the afternoon drawing up a sump. And here it is: The dimensions are the same as the 29 gallon that I recently bought. The are several reasons I did this, the most important one to me is plently plenty of room to prevent overflow in the case of a power outage. Any and all opinions, tips, and questions are very welcomed!!!! Anywhere yall can see a problem or flaw in the design????? Afterall, I don't really know what I'm doing....LOL!!!! Thanks Yall!!!!