this thread is intended as both a refrence giude to those looking for information on planted marine tanks, display based refugiums, or simply the use of specific types of macro algae. and as a place to exchange ideas on how to best utilize macro algae in a marine tank. other topics open for debate are refugium methodology & design within the above guide lines. availability & procurment of heathy specimens.
the macro trade thread
livestock for the marine planted tank
The FAQ's For Red, brown, & Green Macro Algae
Giude to Marine Planted Tank Aqua Scaping
The Substrate Reference Thread & Macro Algae Refence Thread
The major factor in differentiation of the macro algaes is the color. Caused by the amount & type of chlorophyll present. This is then influenced by accessory pigments. This combination present determines. Not only the color, but the ability to survive & compete with other fauna at a given depth. As depth increases, the amount & type of light becomes increasingly diminished. With wavelengths at the blue end of the spectrum being the one's to penetrate the deepest. With the algae responding by shifting to either a red or brown form.
Types of Chlorophyll
(well this is where the guy that was naming them proves to have no imagination, at least they had fun naming the quarks.)
They brake down as chlorophyll A, B, C D & F.
Such as phycoerythrin are not as efficient in photosynthesis as chlorophyll. But in lower orders may be the only light capturing protein present (Bactria). While in higher orders, they extend the range of wavelengths over which light can drive photosynthesis (our macro's).
The differentiation in red from green or brown macros, would be the presence of chlorophyll's A, C & D. Also of note is that only marine based red algae & bacteria possess chlorophyll d. where as green algae possess chlorophyll's A & B. Of the three types of algae in relation to our tanks red macros are actually the most plentiful.
By now you either geeking out with me or wondering what the hell this has to do with our tanks. One of the most often asked ? so far is what type of bulb should i be using . Hopefully by understanding the algae & how it is colored. lighting it will become easier.
Assimilation of Nitrogen & Ammonium
One thing to consider is the uptake of ammonium by the micro or macro algae & how this will affect the cycles within the system over all. Especially when added early in the systems development. A large benefit of having macros comes from this uptake. Reducing the bioload that must be supported by the nitrifying bacteria. This does not mean the macro's will not use nitrates just that they can prefer to utilize the ammonium first. With the uptake rate depending on type, & so in answer to the original question of how the macro will effect the cycles. Their presence will result in lowering the load on the bacterial population in the beginning of a cycle. Thus it will allow for the bacteria to have time to full populate the available media. While reducing the size of the cycle. When the macros are added early in the systems development. Then when the system has had time to fully develop the presences of macros will allow for that much more of a bioload to be supported. The most important thing to understand about the assimilation of nitrogen in both forms is that it is the dominate force in the nitrogen cycle & that ammonium is proffered due to its assimilation needing less energy.
icy's seahorse & macro tank & pt II
To all who have found this thread or the sand bed thread to have been use full. Feel free to utilize it on other boards as needed. Make sure to link back to this thread & add a link to the boards it is now posted on. Feel free to cut & past as you see fit. I would add that in return. Any useful knowledge from said boards kindly be added back to this thread. I believe that macro tanks as a sub genre of the hobby are still in there infancy. Therefore any gain in knowledge needs to be shared & disseminated as quickly as possible. I can only give permission for my posts though. Please PM individual board members to use their knowledge.
Edited by bitts, 15 March 2011 - 05:43 PM.