Photosynthesis Coral ??

Giving what I think I know about Corals with photosythesis, that being they produce food and oxygon with the algae living in them, giving this is true I been watching some of my Corals and have noticed something, so here is my question: If the lighting is so intense that the algae is producing more oxygon than the Corals can use, will they expell the excess oxygon? cus I swear some of my Corals are blowing bubbles. I thought maybe bubble got stuck to them somehow, but I watched these bubble actually form, also it only happens when the MH lights are on.

 

Not sure but I can tell you it happens in FW planted tanks and is referred to as pearling, a sign of excellent health and conditions

 

Zooxenthelle algae exists within coral tissue, giving the coral its color due to the specific wavelength of light which it (the coral/algae) reflects. It absorbs light then reflecting it at a different wavelength. All corals (even within the same genus) absorb a different wavelength.

When a coral absorbs too much light (i.e., PAR - photo synthetically active radiation) the coral bleaches, turning white in color, first loosing tissue then possibly polyps (both are known as tissue necrosis) if it gets serious enough.

 

I'm not sure what you're seeing, but when temp and/or lighting increases to the point that the coral's symbiotic zooxanthellae starts producing a toxic level of oxygen, the coral will bleach by expelling the algae.

 

Corals don't use the oxygen, not during the day anyways (A lot of them respirate at night and produce CO2 as a waste product, like us and is also why pH drops at night in our tanks). O2 is a "waste product" from the formation of sugar (CH2O)------ H2O + CO2 + energy---> CH2O + O2. Like plants (and people), the oxygen (or CO2 in our case) is released into the surrounding environment.

Respiration------ CH2O + O2 ---> H2O + CO2 (this is why your muffler produces condensation).

Sorry if I misunderstood you.

 

Please post an image ReefnJeff if able.

Do you have micro bubbles present?

There are certain nuisance algae that produce bubbles.

 

Can expel o2 or other gases, as they are byproducts of photosynthesis. Had this happen a number of years back to a candy cane coral. Did it a few more times, until I moved them to lower lighting. Otherwise, if the algae is just on the surface, it could be microbubbles, from a skimmer, or from algae, etc.. that is carried from the current, and gets hung up on the coral. Pic would help

 

yeap I got a pic Corailline, no micro-bubbles, i took care of that problem Now I had observed this for periods of time and on different days and watched the bubble actually get bigger and it also looks they are coming out of the mouth.

 

This is an important step I left out. When corals bleach, they first expel zooxenthelle algae, then lose tissue if it gets bad enough.

 

The Coral in question is a Phyllangia Mouchez, the color is normal.