enzymes Komplete for use in DWC bucket or just for cleaning?

Enzyme's Complete is basically a bio cleaner and won't really benefit your plants. It cleans up grow mediums and breaks down dead material/roots... I find putting something outside the buckets to insulate goes a long way like a layer of mylar.. Sure it doesn't look too baller but it's cheaper then a water chiller and does a great job of cooling down my buckets. Also never hurts to "dump" your water ie get rid of everything in the reservoir then do a lower water volume rinse to clean her up a bit and dump the rinse water. I rinse 4 Litres or 1 gallon of water every time I change over a bucket.