Running a Dead or Sterile Res is a good thing for obvious reasons. Bleach or H2o2 will do that, but for me H2o2 has more benefits than bleach:http://www.growthtechnology.com/liquidoxygen.asp. i actually see a visible growth boost, which i wouldnt see with bleach, so its no contest for me!
If you have algae in your res it might be from light leak, if its rot you'll be able to smell it, smells like smelly feet, so get your nose in there & have a whifff, always use my nose.
G'Luck!
If you have algae in your res it might be from light leak, if its rot you'll be able to smell it, smells like smelly feet, so get your nose in there & have a whifff, always use my nose.
G'Luck!