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    Slime in my R/O Water

    I don't think it is anything to worry about. When I have left water in my salt mix can (rubbermaid) I get a slight algea buildup on the walls too. I jut put it in my tank with no problems. Different algeas will grow in different conditions. Nearly any water exposed to air and time will grow...
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    Magnesium

    Well Kate, looks like you have common sense enough to make up for your lack of chemical knowlege. Interesting info and evidently a good catch on your part. You elaborate on a point I was trying to make a while back. When comparing results of different people using different test kits in...
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    Question about coraline alge

    I have definite yellow coraline algea in my tank. One rock, when I first got it out of a 5 year old 75x6 gallon holding/display tank with about 2 lb/gallon LR, was about 20% covered with it. It died off nearly completely in my tank at first. However, within the last few months, it has started...
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    MOJO !!!Read this: Influence of seawater Sr content on coral Sr/Ca and Sr thermometry

    Well, I'm not saying you are doing this. However, it is something I see a lot in both reef chemistry as well as other areas I deal with. Bi-Phosponates is a generic term that is used to discribe a very large group of compounds with diverse physical and chemical properties. One always needs to...
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    MOJO !!!Read this: Influence of seawater Sr content on coral Sr/Ca and Sr thermometry

    Well, this is common. Words like bi-phosphonate can be thrown around somewhat indescriminately. I sell about a million lbs a year of a proprietary isobutylene based bi-phosphonate thio-ester. It doesn't chelate worth a damn but it is a great high temperature dispersant for a jet turbines fuel...
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    Ammonia neutralizing chemicals halting nitrogen cycle?

    Thanks for the compliment Boomer. I may still be learning about reef chemistry from you, mike and many others, but I make my living from physical chemistry. I try to stay on my toes there. You guys are forcing me to do the same here as you should. Regarding the chemical equations for prime...
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    Ammonia neutralizing chemicals halting nitrogen cycle?

    Interesting No, I didn't...look closely...you'll note I said at constant T&P. I can derive the arhenius equation dictating the temperature and/or pressure dependence of the equilibrium constant from either transition state theory or quantum statistics. Not that this is pertinent to the...
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    Ammonia neutralizing chemicals halting nitrogen cycle?

    I wouldn't suggest to use prime for this purpose. If my understanding is correct then prime would interfere with the cycle. Or alternatively it doesn't work by converting ammonia into ammonium. Either way, this will slow down the cycle. The conversion between ammonia and ammonium is purely...
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    Ammonia neutralizing chemicals halting nitrogen cycle?

    Don't know what prime is. I'm wondering why he is getting an ammonia buildup though? What sort of filtration does he use? Is this a saltwater fish only? What kind of substrate etc.?
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    Copper Sulfate in Foods

    The minimum LD 50 for the most sensitive organism in the kill studies was 1900 ppm. You could practically drink this stuff...just kidding of course. Quite non-toxic. You would have to put several cups of pure powder into a 100 gallon to reach this dosage. A few ppm in food that gets further...
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    Copper Sulfate in Foods

    Just read Nikki's post...very helpful. Ethoxoquin is considered an antioxidant. Antioxidants are VERY reactive. In a salt water aquarium these will be gone in no time...I wouldn't worry at all even at fairly high levels..like in dog food. They might kill some plankton but then they'll be...
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    Copper Sulfate in Foods

    Most anti-biotics or pesticides are highly water soluble. Many are also surface active. Water soluble compounds will be effectively removed via water changes. Also, if surface active, they are amenable to skimming. Furthermore and most importantly, antibiotics are reactive molecules. Their...
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    How close am I to being Natural?

    I'm with you. I change my water once/quarter max @ 15%. I run no skimmer either. Just add Top off and kalk and food. Everything working great so far. I have a mixed tank also...Collin
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    Question about coraline alge

    I think that is sound advice. Keeping parameters where they should be is the name of the game. How precise do you believe your Ca and Alk measurements to be? What sort of spread do you see in your measurements? I see about a spread of 30 ppm in mine for Ca and about 0.3-0.4 meq's for Alk.
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    Question about coraline alge

    I think you are misunderstanding me Mike. I am not suggesting people not try to optimize their parameters. I think this is important and your point is well taken. My point is that one should watch things for a while and then decide to change. A simple test you can do to validate my point...
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    Question about coraline alge

    As you have elegantly pointed out, calcification by corals is a complicated but poorly understood process. I am certain that there is an optimum balance of all the important elements a coral needs to exhibit optimum health. Corals though, like any sort of animal, can adapt and also thrive in...
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    Question about coraline alge

    Interesting reading Mike and Nikki...thanks. However, I still see nothing to indicate that the statement above is incorrect. Did I miss something? Sincerely...Collin
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    Question about coraline alge

    I think we are basically on the same page. Corals are believed to work harder against more calcium. I'm not seeing where you are getting the 350 from though? What I am trying to say is that it is the actual measured concentrations of things in the water that impact the coral, not adjusted to...
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    Question about coraline alge

    Just returned from Philly last night. My corraline does this too. It kind of waxes and wanes but the overall growth always trends up on the back glass. I'd say my back glass is like 15-20% covered by now. As long as it is still growing on average you should be OK.
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    Question about coraline alge

    This could very likely be random error of your measurements. If it is real, then likely some lime in your tank dissolved to raise things. Again, nothing to worry about...Collin
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