If you are gonna do a sea of green, u can link all the buckets up to each other.
Just link all of your buckets with hose at the bottom and link them to a main bucket with no plant in it - but a water level bubble (like in the top of your toilet). This will allow you to set the levels for all of the buckets.
I have got this main tank linked up to a "reservoir" tank which i mix my nutes in and allow to drain into my main tank regulated by the bubble thing.
Hope that makes sence.....
here is a pic of what my small system looks like!
