Start reading up on cyano-bacteria and get some physan20 for clean up.
algea needs light and at first that is what is looks like but no green color. The more it looks like snot kind of light brown almost no color the more it sounds like cyano-bacteria.

It will choke off the roots and cause root rot. We cleaned up enough to barely save a harvest. Once it starts you will need the physan20, it's the only thing that will clean it out of your system. Chlorine and peroxide willnot take it out completely. The stuff makes a bio-film that embeds into plastic quite easily.
LOC NAR on probation Reviewed by LOC NAR on probation on . roots turning brown Hi all i have a five bucket dwc. going i am in the veg state i have a pretty strong air pump and water is moving real fast. I just changed my buckets out everything was looking real good I went to check ph today and found inside of buckets kind of scummy and the roots have some of this scum on them also what is causing this I am using fox farm grow big right now any help would be welcomed, bucket are under 1200 watts and tops are black and using dark blue air line. thanks Big Len:rastasmoke: Rating: 5