actually there is other coloured algae from light green to burgandy. www.agrra.org/background/algaeback.html
michaelpeg Reviewed by michaelpeg on . 2 Dumb Questions I should know I have a 5 gallon bucket with an air pump running 24 hs with fow farm grow big and big bloom. There seems to a red preciptate that collects at the bottoom ( see pic). Also is there a point in bubbling water to purify water. I can't afford R/O or distilled in the quantity needed Rating: 5