Have put this in aquatic as it's water related but not related...
I have bought and installed my new green water butt, but the water comes out slightly green and frothy.
It only has rainwater in, and the rain water is coming from the shed roof (roof felt lined). There is no opportunity for algae to grow as the butt is dark green with a black tight lid and no light can get into it.
Q1) Is the frothy water a sign of anything adverse?
Q2) Is there anything I can do about it?
the only thing I can think of is that I didn't wash it out before I installed it. Was I supposed to?