Lasses Dream Build

[jhadaway]

Love that lavender tang.

 

[Lasse]

I do not think it is a Lavendel tang - its bought a year ago as Ctenochaetus truncatus which its clearly is not - that´s clear. But I think it is a Ctenochaetus of some sort - not an Acanthurus, It has not the black spot on the caudal peduncle which is typical for lavendel tang. It has blue lips as Ctenochaetus cyanocheilus but the allover colour does not fit pictures I have seen - its deep brown with a blue hint.

Sincerely Lasse

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[tripdad]

I would call that an aberrant tang and put a $10,000.00 price tag on it. Your lucky day....

 

[Lasse]

I got a better picture. The body is a little darker in reality. Rather sure its a Ctenochaetus cyanocheilus

Sincerely Lasse

 

[Lasse]

The great elk migration have started again

History

Den stora älgvandringen – The Story of the Great Moose Migration

Tensions run high in the control room as the first season of the Great Moose Migration start streaming in 2019. Day after day go by without any sign of the moose. When will they arrive? This is the origin story of the popular slow tv live stream from the depths of the swedish forest, and the...

www.svtplay.se

Present year - press spela

Den stora älgvandringen – Idag 00:00

I flera tusen år har älgarna vandrat samma leder för att ta sig till sommarens rika betesmarker. Följ årets vandring, som är den sjunde säsongen då vi får se älgarna vandra i rutan och på SVT Play.

www.svtplay.se

Sincerely Lasse

 

[Lasse]

Since January 15th of this year I have been using GFO quite heavily (a small amount of La as well). I first did an OCEAMO ICP-MS test because I wanted to follow up on my levels of various substances and see if the effects of GFO that have been reported in laboratory experiments can be valid in an aquarium too. Last week - I did a new ICP-MS test and I can see some pattern. It was not that catastrophe I was afraid of - but some compounds seems be taken up rater much. Probably not = can´t see a pattern that it affect the value;
Probably = a week pattern that GFO affect these compounds: Yes = a clear pattern that GFO seems to affect these values

There is four compounds that clearly are affected by GFO - Barium, Molybdenum. Phosphate and Silicon. There is 89 compounds that show a weak tendency to be taken up - Copper, Lithium, Rubidium, Selenium, Vanadium, Tin, Antimony, Uranium and Arsenic. 2 compounds there initial value was odd. 201 compounds that did not show any tendency to be taken up but some of them was dosed - therefore there can be some uptake. 2 that did not show any tendency at all. However Potassium did show ap an decrease but I have changed around 35 L saltwater with potassium free saltwater during this period. No other WC

I will continue with an aggressive use of GFO for a couple of months and send in a new ICP-MS and see if things change. All parameters will adjust to sea water.

Sincerely Lasse

 

[Lasse]

The ability to regularly measure with ICP has meant that many myths about water chemistry have either been proven true or can be rejected. I have now done 18 ICP-OES and ICP-MS tests over the last 5 years on my 300 liter aquarium without regular water changes. A myth that has existed for many years is that regular use of Balling without water changes will shift the ion balance between chloride and sodium. In my aquarium there has been a slight trend towards an increase but after I switched to using OCEAMO corrector (with the water change 6/2 - 12/2 2023) for adjustments due to skimming and testing, the value has stabilized. Before that I used other salts. These adjusting's corresponds to a daily WC around 0.5 L. I use Triton Core7 and with that variant of Balling and my aquarium - its clearly a myth

There is also a old myth that silicon level always will be 0 in a mature system - that´s clearly not true in my aquarium and my silicon does not enter with my RODI water - Si in that is normally 0 nowadays

I will comeback with the myth that traces and other compounds decrease with time if no WC will be done (or that regular WC will fix the problem) - It differ between different compounds - some seems not be taken up or will come in trough the food.

Sincerely Lasse

 

[Lasse]

A new video from the Maritime Museum of Gothenburg



MVH Lasse

 

[Lasse]

Here is a specular picture . Its laminaria and kelp from the north-eastern Atlantic that has grown in this 100 % re-circulating system the whole winter. As we know it - has never been done before with these species.

And one of mine old clams - still alive

Sincerely Lasse

 

[Lasse]

Which compound will be taken up/precipitate with time in a mature reed aquarium without regular WC? That´s the question with a versal Q

I have put together 8 ICP-MS tests and one ICP-OES. The reson why I took with a ICP-OES is that I did a major WC with a salt free from potassium prior the test. After every test the concentrations - if needed . was raised to wanted concentration


Boron, Strontium and Fluoride. Boron seems to be affected of heavy use of GFI too.

Iron, Fluoride, Manganese and Vanadium

After every test the concentrations - if needed . was raised to wanted concentration

Iron was overdosed during fall 2024 by another product and I run a very low weekly dose after January 2025, The decrease is not likely done by the GFO but Vanadium can have been effected

All these will decrease with time in my aquarium and I doubt that regular WC can compensate this

Sincerely Lasse

 

[Lasse]

This two compounds are also dosed regularly. Rubidium - not so much but in a regular mode

Definitely a demand of them in my aquarium

Sincerely Lasse

 

[Lasse]

Next batch of compounds - not dosed on a regular basis - only compensated up after ICP test if needed

Sincerely Lasse

 

[Lasse]

Compounds that´s not normally added but rather stable

Bromide may have a weak tendency to rise. This compound may be a part of the Triton Core7:1 extra additives

Sincerely Lasse

 

[Lasse]

Compounds that seem to be affected of heavy use of GFO

Edit: Get a comment from Christoph at OCEAMO - they have not seen that Lithium is effected by GFO in their experiments. My result could be an one time wounder (or a **** value as we say in Sweden)

Sincerely Lasse

 

[chema]

Hi Lasse: very interesting long time experiment and a very difficult one to see meaningful results as most of us either perform water changes or add trace elements or both (that is my case). I'll have to review the tables carefully.

 

[Lasse]

The next batch - Compounds that´s rather stabile and also probably a part of Core/:s trace addition. Cu seems to be affected by heavy use of GFO

Tin and my aquarium is a mystery. From have not been detected until 23-01-18 - it reach the roof 24-04-12 - after that it has decline rather much but it is still more than 100 time´s higher than wanted. I have not seen that any bad things things happens when it skyrocket 24-04-12.

Sincerely Lasse

 

[chema]

Hi Lasse: welcome to the "Tin mistery". Same here.

I have had tin as high as 67 and half a year later it was 0. Then, in 4 months it climbed again up to 15, to go to 0 a few months later. An Oceamo test in February 24 yielded 15, a Triton test of a sample collected the same day yielded a value of 8. Oceamo tests in September 24 and January 25 yielded values of 1,2 and 7,9 respectively.
I suspected that RO water could be the problem but several tests gave 0.

 

[Lasse]

Hi Lasse: welcome to the "Tin mistery". Same here.

I have had tin as high as 67 and half a year later it was 0. Then, in 4 months it climbed again up to 15, to go to 0 a few months later. An Oceamo test in February 24 yielded 15, a Triton test of a sample collected the same day yielded a value of 8. Oceamo tests in September 24 and January 25 yielded values of 1,2 and 7,9 respectively.
I suspected that RO water could be the problem but several tests gave 0.

I use some frozen copepod blister pack from Ocean Nutrition and thought that I got some of the metal folie in my water. However - I do not know if they use Tin in their folie - I wrote a letter and ask but they was clearly not willing to answer that question - I did not get any answers. If you look at my graph - you can see that I change around 1/3 of the water after 23-01-18 and a normal ICP test (not ICP-MS and not in my chart above) a couple of days later show 16,5 µg/L - If you ad this decrease of around 7 µg/L to the result 23-10-10 - you will have a steady rise all the way to 24-04-12

Another compound that I have some problems with is Al. I sometimes use an Al based compound in order to decrease my PO4. Normally Al will decrease when I only run GFO (Iron based) - not this time.

Other pollutant's seems to move all around the place but in low concentrations

Sincerely Lasse

 

[Lasse]

Between the two last measurements - I had a rising La concentration. Its because i run La also for a while. Have stop that now

Sincerely Lasse

 

[Lasse]

In another thread we discuss if H2O2 (and mainly an oxidator) could take away the yellowing substances in our aquarium. In my case - I have use both an oxidator and CaCO3 and after more than 2 years without a regular WC - my water looks like this compared with fresh saltwater

This is a result of Oxidator use for the whole time and precipitation by CaCO3 - 3 times during the last three months

In order to do a check if I get the same result with pure H2O2 and only CaCO3 - I start a test.

I mixed 20 ml of my skimate with 150 ml RO water - and pour it in 6 glasses. 1 control, 1 with a teaspoon of CaCO3. 1 with a teaspoon CaCo3 + 5 ml 12% H2O2. 1 with 5 ml 12% H2O2, 1 with 3 ml 12% H2O2 and one with 1 ml 12% H2O2. I also took a glass with 150 ml tank water.

I run the test for 43 hours - took photo at start, after 1 hour, after 21 hours and after 43 hours

After 1 hour

After 21 Hours

After 43 hours

After already 1 hour - even 1 ml H2O2 give result.

In order to see if I can get result during time with higher concentrations of yellowing substances and lower concentrations of H2O2 - I will do a test with 100 % skimate and lower percentage H2O2. Result will come later on.

Sincerely Lasse