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UV, why and what for?


lduncan

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you call it hype. It's reality.

If you don't trust or respect what I have to say, ask Randy what it means then, or Hanna themselves for that matter.

You haven't answered any of my questions. (Including the other thread where you claimed levels of 0.003 where dangerously low)

Layton

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you don't trust or respect what I have to say,

Layton

You got that one right.

You haven't answered any of my questions. (Including the other thread where you claimed levels of 0.003 where dangerously low)

Layton

Not going to either.

I've played your games of answer 20 silly questions before. It always goes nowhere.

If it was someone with an open mind, I'd happily discuss, but with you, I'm wasting bandwidth.

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Send me some water, and show me your tank.

If the reality matches the hype, you just may be able to open my mind! :D

But in the mean time, I'll go with my hanna. In the US and in Europe it is regarded as the finest phosphate testing device available to the hobby, and that has certainly been my experience. ( As a guy who actually has experience )

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A couple of reasons;

1. I have to remember to take the camera with me in the mornings, as I am not living where the tank is due to renovations.

2. It's not up to my standards at the moment. Apparently I have high standards (so i've been told). I'd say it's in an "average" state at the moment. When i'm reasonably happy with it, i'll have some updates.

3. People seem to take photos of proof of various things. There are not, all they show is how nice a tank is, nothing more, nothing less. I get the feeling that somehow, people are going to take all the information i've given and make a judgement as to whether it is correct or not based on a photo. Which you clearly can not do.

If you're coming to Christchurch any time soon, you're more than welcome to visit.

Back on topic

Just measured nitrate on the way home. It's two weeks to the day that I added the UV, and to my surprise the nitrate has shown up as undetectable. There is just a very faint blue/gray colour from reagent 2. No pink tinge that I can see at all.

I did 3 test, in three different vials to make sure it was correct. They were all consistent.

The real test will be to see if any colour develops overnight, as the cadmium reduction method used is time sensitive in the colour it develops.

Judging by the detritus production from the rocks, and the skimmate since the UV was added, denitrification has clearly kicked into overdrive. Although I didn't expect to see such a rapid change.

Layton

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i think we need a advice notice at the top of the forum advising people not do perform nitrate tests while driving. :)

thats quite a remarkable result, the uv is the only thing you have changed in that period correct??

:lol:

Added one more stream at the same time as the UV. And new halide bulbs just over a week ago.

Layton

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3. People seem to take photos of proof of various things. There are not, all they show is how nice a tank is, nothing more, nothing less.

Layton

I'd dissagree with that absolutely. In fact the photo (if not doctored) is proof of wether you can keep your sps corals healthy or not. In fact you yourself have very often used photos to attempt to prove various ideas/theories. You have certainly been very ready to use pics of Pies tank to explain where you believe he is going wrong. But you claim a pic of your own tank will not prove anything?

And, once you do get nice colorful SPS corals, I am sure you will waste no time in showing the pics, as "proof" you know what you are talking about.

I get the feeling that somehow, people are going to take all the information i've given and make a judgement as to whether it is correct or not based on a photo.

Layton

That's exactly what's going to happen, and that's why you're afraid to post a pic.

People will look at your SPS corals, and then think "After everything this guy has been saying about SPS corals, RTN, rapid drop in nutrient levels, etc. His own SPS corals look like THAT?".

Could be embarrassing.

To be straight up, I've been hearing for a year or so that you forgot to take your camera this morning.

And for too long I've been hearing that your tank is not quite up to your standards at the moment.

To be honest Layton, i do believe that with your level of dedication to the hobby, you will eventually achieve SPS corals that you are not ashamed to let anyone see. But it is going to be a long hard process, if you concentrate on shooting everybody down, rather than learning stuff that will help you achieve your goal.

After all your years in the hobby & you are still ashamed to let anyone see your SPS corals, is it not apparent that perhaps some of your own ideas might need changing? There are new players on this board who have started tanks and now can show nice SPS corals, and even growth shots, in less time than you have been cooking your rocks.

All this arguing crap that goes on, for my part, i just find it so frustrating to see you posting information that will lead to problems/failure, to anyone who follows it. That's why I argue, just because you set yourself up as such an expert people who don't know better will be inclined to follow.

Anyhow, I'm pretty sure you may have some nice corals of the easier types, such as LPS, or softies, why not show pics of them? I am sure no one will laugh. I've posted some cruddy pics myself and the good folks here were very appreciative anyway.

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People will look at your SPS corals, and then think "Is everything this guy has been saying about SPS corals, RTN, rapid drop in nutrient levels, etc. to be relied on, going by the state of his own tank".

Could be embarrassing.

What would be embarrassing is if you tried to substantiate your claims based on research and fact, rather than hearsay. For example, recently you said phosphate levels below 0.003 are dangerously low for SPS. I asked you where you got that number, considering many healthy reefs quite happily operate an order of magnitude lower than that (between 0.003 and 0.0003). You couldn't, or wouldn't answer.

The reality is that you read something by someone, take it as gospel, without any thought that it may be incorrect.

There is a bit of scientific naivety on your part, along with fundamental logic flaws in many of your arguments.

You can't answer any questions I pose, either due to your inability to, or your prejudices prevent you from.

You may actually learn something, if you weren't so blinkered in your thinking.

All this arguing crap that goes on, for my part, i just find it so frustrating to see you posting information that will lead to problems/failure, to anyone who follows it.

Show me any piece of advice which I've give which will lead to "problems/failure"?

Layton

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I'd dissagree with that absolutely. In fact the photo (if not doctored) is proof of wether you can keep your sps corals healthy or not.

How do you tell a coral is healthy from a photo? Remember the colourful photo of a large colourful table? That coral wasn't healthy, it was totally bleached out. It looked like it was healthy from the photo, however.

if you concentrate on shooting everybody down, rather than learning stuff that will help you achieve your goal.

I don't shoot people down, I shoot down statements which are just wrong. Blatantly wrong.

After all your years in the hobby & you are still ashamed to let anyone see your SPS corals, is it not apparent that perhaps some of your own ideas might need changing?

I'm quite happy to show people my tank. Nor am I ashamed of it.

I am sure no one will laugh. I've posted some cruddy pics myself and the good folks here were very appreciative anyway.

I'm confident people wouldn't laugh at any photos i post. Your assuming my tank is in a bad state. It's not.

Layton

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You have certainly been very ready to use pics of Pies tank to explain where you believe he is going wrong.

I used Pies tank, and Eric's tank, as examples of what phosphate loaded rock looks like, as a result of phosphate being absorbed from that stored in the sand bed. People can run their tanks as they please, but to say things happen one way, when there is irrefutable proof that they happen another is ludicrous, and it's common among some people on this forum.

Again, I don't care how you want to run your tank, but if you spout something with isn't accurate, I'll correct it.

Layton

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OK Layton, that's fine. You just carry on.

But just for anybody elses info, I stand by the dangerously low phosphate levels I gave, Layton is wrong.

I am talking about a tank, not, as Layton claims, a reef. In a reef, neither of these extreme levels would ever be likely to eventuate in quick succesion, but even if they did, SPS corals on a wild reef derive Po4 from plankton they consume, which is not available in a tank.

In a tank, a sudden drop in Po4, from 3.00, to 0.003, without supplementary feeding, is EXTREMELY likely to lead to TN.

And Layton, go ahead. Get the last word. I cannot be bothered refuting every bit of crap I see written, I'll just say reader beware.

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