A corydoras puddle.

[John q]

Amazing how life finds a way to survive. Video of Corydoras and Apistogramna in a small puddle of water in the foothills of the Andes.

 

[mrhoyo]

I watched it last night, he has some interesting videos.
I always find it bizarre how much algae there is in nature and then we do our best to eliminate it at home.

 

[Yugang]

I always find it bizarre how much algae there is in nature and then we do our best to eliminate it at home.

In a world without algae we all would soon be extinct (or not be here in the first place). Algae produce an estimated 30 to 50 percent of the net global oxygen available to humans and other terrestrial animals for respiration. Not even to mention algae role in the food chain.

Algae - Ecological and commercial importance

Algae form organic food molecules from carbon dioxide and water through the process of photosynthesis, in which they capture energy from sunlight. Similar to land plants, algae are at the base of the food chain, and, given that plants are virtually absent from the oceans, the existence of nearly...

www.britannica.com

The opportunity could be in algae farming, where some of us have excellent credentials

See How Algae Could Change Our World

Algae grow ten times faster than terrestrial plants has the potential to solve the 21st-century global challenges of energy, climate, and food security. See what these startups, companies, investors, and scientists are doing about it.

www.forbes.com

Onshore algae farms could feed the world sustainably | Cornell Chronicle

Growing algae onshore could close a projected gap in society’s future nutritional demands while also improving environmental sustainability.

news.cornell.edu

 

[FrozenShivers]

In a world without algae we all would soon be extinct (or not be here in the first place). Algae produce an estimated 30 to 50 percent of the net global oxygen available to humans and other terrestrial animals for respiration. Not even to mention algae role in the food chain.

So does that mean it algae has a meaningful effect on helping oxidise the water in aquariums?

 

[Yugang]

So does that mean it algae has a meaningful effect on helping oxidise the water in aquariums?

Our globe is covered covered for 70% with water, with seas averaging 3 km deep. Our aquarium, with a much different ratio of algae bio mass to plants biomass and water, I would expect some but less significant impact. There are some reports of algae 'pearling' in the tank, but I would take these with a grain of salt. But yeah, algae, just like plants, produce oxygen in the tank.

 

[dw1305]

Hi all,

....... Our aquarium, with a much different ratio of algae bio mass to plants biomass and water, I would expect some but less significant impact. There are some reports of algae 'pearling' in the tank, but I would take these with a grain of salt. But yeah, algae, just like plants, produce oxygen in the tank.

That is it, all photosynthetic organisms are net oxygen producers. <"In photosynthesis"> one molecule of oxygen is produced for every molecule of CO2 incorporated.

The <"carbon content of the plant"> is a measure of the difference between the oxygen used in respiration and the <"oxygen evolved above the LCP">. The most <"highly oxygenated water"> I've experienced was entirely produced by algae.

When we sealed the water collection bottles (collected with a <"Phil sampler">) the green water algae were pearling very noticeably. The water, and sweep net samples, are in the lab. at the moment, so I will eventually have some invertebrate numbers and chlorophyll, NO3, NH3 and PO4 values.

The pH and supersaturation of oxygen were both caused by the phytoplankton bloom, and the total lack of water movement.

Pearling is also the mechanism that <"filamentous algae (blanket weed)"> use to float to the water's surface.

Cheers Darrel