brown roots

I stumbled on this forum when trying to help my brown roots in my dwc buckets. I have been making and using that tea heisenburg put up. Its been working pretty well for me so far. I love my dwc buckets, I want to tweek them some though I have water farm ones and want to drill the holes conecting the tubing bigger so I can use bigger tubing too and get more water flow.

Tea in DWC .... Not something ive yet to come across.

Sounds interesting, although the risk of organisms growing in the bucket would be a problem. No?