I read a recent article that is easily found in search that is admittedly well written dealing with Aquarium Redox, with a good explanation as to what Redox is and more, however this article still chooses to repeat much of the same tired old information about only the positives of the oxidative side of the Redox equation, missing the evidence that the reduction side is also VERY important to a healthy Aquarium Redox Balance (I noted that the sources this particular article sited were all more than 15 years old which may explain much of the out of date information).
Photosynthesis, for example, is the concerted action of dozens of proteins (genes) with copy numbers in the hundreds to enable a simple chemical equation: carbon dioxide + water = sugar.
As was discussed in detail in a previous lecture, the plant requiressunlight, carbon dioxide, water, and nutrients, and through photosynthesisthe plant produces reduced carbon compounds and oxygen.
Some of the light misses the leaf chloroplast, where the photsynthetic reactions occur, and much of the energy from light that is converted by photosynthesis to carbon compounds is used up in keeping the plant biochemical "machinery" operating properly - this loss is generally termed "respiration", although it also includes thermodynamic losses.
When a crop of wheat grows, neworganic matter is created by the process of photosynthesis, which convertslight energy into energy stored in chemical bonds within plant tissue.
Some of my practices were very similar to what is now called the "Walstad Method" (this was known as the German Method for years), which in the end is what pleased my clients.
The Walstad Method takes its name from Diana Walstad and her book, Ecology of the Planted Aquarium. It is characterized by striving to achieve a balance between the fish and plants in the tank such that fish provide nutrients for the plants and plants detoxify the water for the fish.
I also respectfully differed due to the fact an aquarium is closed system. The reason being that the nutrients derived from fish and their feeding I found were generally not enough, if only for required mineral Cations for Redox balance important for fish health, so I still supplemented some even in these basic planted aquariums.
What was NOT desired by the majority of my clients were the high tech methods that are more time consuming and more expensive (if only for the cost of your time in maintaining these types of tanks). So, my experience with some of these high tech methods is more limited, although I continue to read & experiment too.
However, I do provide information as well as outside resources for these methods, too, if you are interested in them. If I can't help you, I at least want you to be able to help yourself.
Like chlorophyll-bearing plants andother organisms capable of photosynthesis, chemosynthetic organisms areautotrophs (see for more information).
That is the "cost" you pay to keep operating, and it is analogous to the respiration cost that a plant has when their cells use some of the energy fixed in photosynthesis to build new enzymes or chlorophyll to capture light or to get rid of waste products in the cell.
Singh AK and Sherman LA (2007) Reflections on the function of IsiA, a cyanobacterial stress‐inducible, Chl‐binding protein. Photosynthesis Research 93: 17–25.
Vinyard DJ, Ananyev GM and Dismukes GC (2013) Photosystem II: the reaction center of oxygenic photosynthesis. Annual Review of Biochemistry 82: 577–606.
As well, some aquarium products are also oxidizers such as Potassium Permanganate (sold in products such as "Jungle/Tetra Clear Water") and Mardel Maracyn Oxy. For this reason both of these products should be used with great caution in your aquarium (although use in established aquariums with a balanced Redox should not be problem when used as directed).
Even mild oxidizing aquarium remedies such as Melafix or Herbtana should be used sparingly as over use WILL CAUSE oxidative stress, as this is what an oxidizer does, it causes stress to tissues! Think stomach acid, an oxidizer, but you sure would not want your other body tissues exposed to it.
A taro plant soaks up water through its roots. Carbon dioxide is absorbed into openings in the leaves called stomata. Water and carbon dioxide enter into the plant cells.
Inside plant cells are tiny structures called chloroplasts. Inside the chloroplasts is a green pigment called chlorophyll, which changes sunlight into chemical energy. This chemical energy splits up the water and carbon dioxide molecules and makes glucose. Glucose (what the plants “eat”) and oxygen are produced by photosynthesis.
Here are a few reducers, in other words, elements or processes that can transfer electrons to another substance;Magnesium, Calcium, Sodium, and the process of Photosynthesis involves both oxidation and reducing.