Id love to see/hear other side of the argument too though as well. maybe they do have a point which we are missing here !
@Allmost
I will be happy to tell You what was the background of wether Co2 has an impact on the corals Growth and colors.
We were a group of friends, who had the same experience when we switched from Balling to kalkreaktor.
The colors increased and the Growth formerly exploded. And we were asking ourselves, why? The same thing happend in at least 4 tanks.
All of us was doing the same thing. We use a weekly waterchange of, around 5 - 7% as the only supply of trace elements. Nothing else is added to the tanks.
Gnizten (Tom) and I were discussing the matter one day, and Tom, who in the past had kept freshwater with plants, remembered that he used Co2 to boost the plants growth.
Then the idea popped up, could it be the same thing that was going on in our tanks - or a something similar?
The question was, is it the Co2 that are boosting the photosyntesis?
I did some research and I found out, that the photosyntesis need light, water and Co2. Some of the Co2 will be produced by the coral itself, but the demand for Co2 is greater than the amount that is avialible.
It was for this reason that the idea emarged - could the Co2 that we use in the calciumreaktor, be the factor that gave us the increasing results in the growth and coloration?
It would be very interesting to hear Your comments on that.
It could of course be a combination of coincidences, but then it should have occurred in 4 separate tanks at the same time.
Finally, let me mention, that I have asked a biologist and a professor from one of the universities i DK, whose specialty among others is this kind of biology, abouth their veiws on the issue.
Both thought that the idea was interesting. The professor had used calciumreactor in his own tank, but have never been given the Co2 influenze any thoughts. Both promissed to look for further information.
Looking forward to hear, if You have any comments on the matter.
Mery Christmas and a happy new year to everybody on RC.
Erik
Ps. For those who might be interested in seeing the thread and the pics of the corals, it is found here:
http://www.saltvandsforum.dk/viewtopic.php?f=4&t=63916
Its of cause in Danish, but I can help with som translation if needed.
Please bear with any grammatical and spelling errors.
It is not often I write in English.