feeding corals c02

[shrimphead]

does anyone feed their corals c02, as the symolic algae zooxanthellae breaths c02 and release oxygen,

" Battad et al., 2007 report that pH values above 9.0 can "˜kindle' (that is, cause a chromoprotein to become a fluorescent protein) many coral pigments and cause dramatic (20-100 fold) increases in fluorescence efficiencies. Of course, we're talking about corals' tissue pH and not that of the ambient water.

Photosynthesis (such as that by corals' symbiotic algae) is known to have an effect on pH. Removal of carbon dioxide (CO2) by algae will raise the pH during times of "˜sufficient' illumination."

so feeding corals c02 would increase it's ph surface in turn increasing it's fluorescence or just to make sure i haven't got it wrong does it mean that the water in absence of c02 increase the corals ph surface, but that wouldn't really make sense tho.

anyway what do you guys think about maintaining c02 ballanced water in promoting and changing coral fluorescence

:reading: here's the link:

http://images.google.co.uk/imgres?i...ages?q=coral+wavelength+chart&hl=en&sa=N&um=1

the article is in the section Alkali Effect" on Chromoproteins

 

[shrimphead]

got it wrong, adding c02 lowers the ph, how do you raise it

 

[Logzor]

Topping off with kalk and an open window can easily raise pH to 8.6. It is not advised to raise pH over 8.6, though.

 

[elijaher]

Fish,bacteria, dieing organism produce co2. Their is not a know method to feed coral co2 directly. It will effect you water ph before its get to corals.

 

[billsreef]

The way the buffering system in SW works, your corals are not CO2 limited. Additionally, you can't add extra CO2 to the water without dropping the pH, which will also lead to dropping the corals internal pH. So I wouldn't go for adding CO2 to a reef tank.

Of course, we’re talking about corals’ tissue pH and not that of the ambient water.

Photosynthesis (such as that by corals’ symbiotic algae) is known to have an effect on pH

Bottom line, photosynthesis drives the internal pH up over ambient water pH. Feed your corals (their metabolism will also supply CO2 to the zoox) and give them optimum lighting for photosynthesis, they will do what they do naturally

 

[sneeyatch]

That actually raises a good question regarding Tropic Marin's Bio-Calcium. It states that when this product is dosed to a system, CO2 is added for the zooxantheallae.

 

[billsreef]

I think they are being a bit tricky with that claim. The CO2 is essentially part of the calcium carbonate. When the coral uses the Calcium, it also liberates some CO2 from that carbonate It goes back to that carbonate buffering system, the corals can use CO2 from the carbonate, which is plentiful in SW and why the corals are not CO2 limited in our tanks

 

[sneeyatch]

OK cool. I was given a good amount of TM's product by a local club member but haven't used it yet. I found this thread ironic since I just read TM's claims and saw it here too. Thanks, Bill.