dzhuo
Active member
Are there anything you can highlight from the study? I am always looking for new information.
Who doses Lugols and do you test for iodine?
- Thread starter JG1
- Start date
Are there anything you can highlight from the study? I am always looking for new information.
Paul B
Premium Member
These chemicals are in the tissues of our animals because they need them, even copper but there is already more of these things in our tanks than in NSW so we don't need to dose it. Iodine, in my tank anyway is much lower than NSW so I dose it. It never gets to the amount in NSW.
dzhuo
Active member
Lot of these chemicals (certain form of iodine included) aren't obtained externally. They are produced. Anyhow, if you feel the need to dose and can reliably measure (which is almost never the case when it comes to iodine) level in your tank, there is really nothing wrong with using chemical. I don't really want to further deter the discussion for those who are interested to use such chemical. Like I mention earlier, I just want people to be aware of the potential risk especially when it come to iodine.
JG1
New member
How did you come upon that dose? Seems like a lot since the bottle says 1 drop per 25g weekly.
This thread is amusing me...
agreed...
Allmost
New member
simple answer is, yes or no.
as of seeing the effect, I see it weekly in my tank, and many other low nutrition systems. I cant show the difference with my Black Berry pics though.
corals, [SPS lets say] wont directly take up iodine. rather, Iodine, is used up, by the Micro-biota loop, which is overlooked now a days on cyber space ! the same loop of organisms that lower nutritions in our tank, decide, and improve the coloration of our corals. these provide the coral with the RAW material they need, besides the energy and color pigments they get from Zoox and lighting. the reason I mentioned this only being visible in lower nutrition systems, is the same reason ! in higher nutrition, coral has enough "RAW material" that it turns brown, in lower nutrition, that is all the coral is dependent on, besides lighting, hence the greater effect, same goes for FE and some other elements known to contribute to coloration.
of course, Just my opinion, and sorry if that didnt make sense
Allmost
New member
well the link is only the abstract and not the full article, I can get it from my school though ...
basically :
Effects of potassium iodide on the growth and metabolite accumulation of two planktonic diatoms.
Weifa Zheng, Caifa Chen, Yiqin Wang, Kangde Bao, Xuemei Wang and Chengcai Chu
Journal of Applied Phycology
Volume 17, Number 4, June 2005.
Abstract
In this study the effects of potassium iodide on the growth and metabolite accumulation of Nitzschia closterium (Ehr.) W. Smith and Phaedactylum tricornutum Bolin were investigated to assess its possible application to the mass culture of the two diatoms in open environment, extensive systems. The results indicated that supplementation of potassium iodide at a concentration of 1000 mg L−1 resulted in a reduction of the induction phase in cultures of N. closterium and P. tricornutum and led to an increase in the accumulation of biomass and extracellular polymeric substances. Conversely, the addition of potassium iodide, at all concentrations tested, showed no obvious effect on the fatty acid profiles of the two diatoms, particularly in the content of eicosapentaenoic and decosahexaenoic acid. Potassium iodide was also found to inhibit the growth of Dunaliella salina, Cryptomonas sp. and Chlorella sp. at minimum inhibitory concentrations of 356.8, 475.9 and 696.2 mg L−1, respectively. It also inhibited bacteria, including species isolated from the two diatom cultures, at a minimum concentration of 400 mg L−1. These results suggest that potassium iodide is an effective agent for inhibiting the proliferation of certain flagellate and non-flagellate algae, and bacteria, thus forming a favorable environment for diatoms to proliferate and consequently improving accumulation of biomass and EPS. These properties of potassium iodide provide a possible solution for preventing contamination from flagellate and non-flagellate algae in mass culture of the two diatoms without causing significant changes in their fatty acid composition.
JG1
New member
I wonder why Kent's instructions say 1 drop/25g weekly
JG1
New member
Ok. I was assuming that since they were all phrased 'Lugols", the it was a standard concentration.
