Can very clear water promote cyano growth?

[Jon_W79]

Could very clear water(I think it may be very clear at least partly because of a lack of humic substances)promote the growth of cyanobacteria?

(PDF) EFFECT OF HUMIC ACID ON SPIRULINA PLATENISIS PRODUCTION AND ANALYSIS OF NUTRIENT CONTENTS

PDF | Spirulina is a microscopic blue-green alga in the shape of a spiral coil, used as a human dietary supplement, as well as a whole food, which was... | Find, read and cite all the research you need on ResearchGate

www.researchgate.net

 

[lapin]

Related
In Austin we have a toxic blue green cyano that is appearing in our rivers and lakes
One study points to a cause: A flood 2 years back added extra Po4 to the water. The zebra mussel epidemic, filtering out all the normal algae and stuff. The super clear water has allowed toxic cyano to bloom and has become a problem.

 

[taricha]

Could very clear water(I think it may be very clear at least partly because of a lack of humic substances)promote the growth of cyanobacteria?

(PDF) EFFECT OF HUMIC ACID ON SPIRULINA PLATENISIS PRODUCTION AND ANALYSIS OF NUTRIENT CONTENTS

PDF | Spirulina is a microscopic blue-green alga in the shape of a spiral coil, used as a human dietary supplement, as well as a whole food, which was... | Find, read and cite all the research you need on ResearchGate

www.researchgate.net

Actually, the underlying data is that humic acid was a nutrient that increased growth of spirulina, but only up to 0.2 or 0.3% - higher than that had diminishing returns.

0.1, 0.2, and 0.3% grew more biomass than 0.0%, and 0.1% humic acid is actually a lot (1000 mg/L). It would be super yellow or maybe even brown by aquarium water standards, I think.

 

[Randy Holmes-Farley]

I do not think clear water is a significant contributing factor to cyano in a reef tank.

 

[brandon429]

I must agree because we like to completely disassemble tanks, wash out their sand for hours, re install only perfectly clean rocks over washed sand with all new water. its the clearest condition a reef tank could be in...and we're kicking cyano's tail in the process though its a huge amount of work. if they're already moving homes anyway, nobody complains as a side benefit was the skip cycle transfer. we get one pass fixes in about 90% of jobs, 10% require some touch-up guiding. high % compliance outcomes on file.