Would it be better to buld my own or just buy one?

And is it hard to build one?
Mr. Purple Reviewed by Mr. Purple on . Best and Worst of DWC? I'm thinking of going to DWC, but i would like to know a few things. Is yield substantially higher with DWC than soil? Will i need to fill/change the water every day if so how many hours can it go before i have to fill it up with more water? Rating: 5