Algae bloom?
- Thread starter Mirror Painter
- Start date
I would hope not.
gordontytler
Well-Known Member
This is a facinating thread but what is the conclusion:- is it sewage or last year's scum floating or some sinister oxygen hating qo? As suggested, poking it with a stick or fishing it out and smeering on a flat surface and sniffing would provide useful evidence. I saw the bubbler boat many times when I was working by the river at Hammersmith but although this page has
lots of graphs I see no evidence that it actually works http://www.environment-agency.gov.uk/research/library/publications/116073.aspx but how can you test it in a controlled way? The boat was impressive but compared to the average wier and effect of the daily tide... is it just a tax dodge or publicity stunt?
lots of graphs I see no evidence that it actually works http://www.environment-agency.gov.uk/research/library/publications/116073.aspx but how can you test it in a controlled way? The boat was impressive but compared to the average wier and effect of the daily tide... is it just a tax dodge or publicity stunt?
CJL
Well-Known Member
Yes it works and works well. A lot of pollution incidents that involve sewage either involve bubblers or chemical dosing that have the same effect and add dissolved oxygen to the water. Normal DO levels on a good water course are anything above 60/65% and fish start dying when it gets as low as 30/40%.
