All-For-Reef: Enough iodine?

[Spare time]

At least in Germany there was no consensus that potassium supply is necessary or beneficial at all. I also had doubts that there may be any positiv effect of potassium supply.

Armin Glaser, who has written a book "Ratgeber Meerwasserchemie" (Guidebook Saltwater Chemistry), published the position that a little less is better than a little more since concentrations only slightly over the natural concentration of 400 ppm had negative effects to some test organisms like mysids while low concentrations down to 200 ppm had no negative short term effects.

My own first trials with potassium under the instructions of an advocat of potassium dosage went very bad and killed some corals and affected others very badly.

Only recently, after years without any water change in one system, potassium concentration had dropped to 300 ppm and I decided to increase it to the normal 400 ppm which showed some positive effects.

Since our salts are well supplied with potassium and it is easy to keep it at natural levels with normal regular water changes, I do not expect a positive effect of routine potassium dosing, rather a negative effect. I can only recommend a potassium supply for tanks with proven deficiency. For this we offer the products Tropic Marin Potassium and the K+ Pro test kit.

My tank consumes a fair amount of potassium. I have to dose it along side all for reef. I think my refugium is the largest sink of it. I'd rather have potassium than some of the trace metals which I found to have built up over time in my tank. I have gone through several gallons of all for reef without water changes on my 75 gallon tank, and some of the metals were elevated without any source of rust in the tank. I'd be glad to share my icp test with you if you are interested, especially given most people don't do near 0 water changes tanks and all for reef together as far as I am aware.

 

[Hans-Werner]

I could not also find the new batch in German shops, can I order directly from tropic marin?

Usually the shops don't give the batch number. Did you ask the shops?

I just received the 1600g container of powder last week from bulk reef supply and the lot code starts with 1.

Can you please give me the batch number. Then I can take a look into the records.

 

[hoytoyed]

Usually the shops don't give the batch number. Did you ask the shops?

Can you please give me the batch number. Then I can take a look into the records.

Sure and thanks for the reply
Lot 13546

 

[Hans-Werner]

Yes, I am sorry, this batch 13546 is still one with the lower iodine concentration.

This is something a manufacturer of course wants to avoid, problems with a switch. However it is something that cannot be completely avoided, some older versions still being in the racks of the shops.

 

[hoytoyed]

Yes, I am sorry, this batch 13546 is still one with the lower iodine concentration.

This is something a manufacturer of course wants to avoid, problems with a switch. However it is something that cannot be completely avoided, some older versions still being in the racks of the shops.

I understand. With BRS being a huge online seller you’d think that the older versions would have been worked through, but maybe they had a huge supply or have a rotation issue.

 

[Superlightman]

My tank consumes a fair amount of potassium. I have to dose it along side all for reef. I think my refugium is the largest sink of it. I'd rather have potassium than some of the trace metals which I found to have built up over time in my tank. I have gone through several gallons of all for reef without water changes on my 75 gallon tank, and some of the metals were elevated without any source of rust in the tank. I'd be glad to share my icp test with you if you are interested, especially given most people don't do near 0 water changes tanks and all for reef together as far as I am aware.

For me nothing built up but with the old formula I lack Iodine, vanadium, zinc, nickel

 

[HBtank]

Is the iodine supplemented in all-for-reef actually elemental iodine, or iodide?

 

[Hans-Werner]

The iodine in All-For-Reef is iodide.

Dissolved elemental iodine would give a brown color to the solution. More or less clear and colorless solutions contain iodide (I-) or iodate (IO3-).

 

[HBtank]

The iodine in All-For-Reef is iodide.

Dissolved elemental iodine would give a brown color to the solution. More or less clear and colorless solutions contain iodide (I-) or iodate (IO3-).

Yeah, makes sense, I figured that was the case. Is it potassium iodide or something like potassium bromide? Guessing the latter since your A- Elements has bromine and fluorine?

 

[Hans-Werner]

All-For-Reef contains the halogene salts potassium iodide, sodium bromide and potassium fluoride. Iodine and bromine sometimes may have the same or very similar biological functions.

 

[Acros]

Anyway to know if my batch is the higher iodine formula?

Batch number: 04716

 

[Hans-Werner]

Anyway to know if my batch is the higher iodine formula?

At least in USA it is the ALL-FOR-REEF in the new white bottles with the dosing cap.

There may be a slight overlap with the old bottles elsewhere but in general the All-For-Reef with higher iodide concentration is in the round white bottles.

 

[Acros]

At least in USA it is the ALL-FOR-REEF in the new white bottles with the dosing cap.

There may be a slight overlap with the old bottles elsewhere but in general the All-For-Reef with higher iodide concentration is in the round white bottles.

Thank you for the clarification. Mine is the power version, 1600g.

 

[Hans-Werner]

Sorry for the misunderstanding.

The batch numbers 141.. or higher for the first three of the five numbers. I think for USA it is mainly batches starting with 2....

Batch 04716 is still the lower concentration.

 

[wolfen281]

New can has chocolate chips plus yellow discoloration of the plastic/paper.
Is this the new formula?
Is this can safe to use?

 

[Hans-Werner]

New can has chocolate chips plus yellow discoloration of the plastic/paper.
Is this the new formula?
Is this can safe to use?

Yes, this should be the new formula. If you give me the batch number I can tell for sure.

Both, the yellow discoloration and the "chocolate chips" is iodine. The apparent size of the "chocolate chips" is because the iodine is bleeding out and coloring surrounding salts and appears larger and more in this way.

 

[wolfen281]

Yes, this should be the new formula. If you give me the batch number I can tell for sure.

Both, the yellow discoloration and the "chocolate chips" is iodine. The apparent size of the "chocolate chips" is because the iodine is bleeding out and coloring surrounding salts and appears larger and more in this way.

Attached are pictures of the can number.

Thank you so much. I was on my last 200mls for dosing and didn't want to goto something new.

 

[Hans-Werner]

Attached are pictures of the can number.

Thank you so much. I was on my last 200mls for dosing and didn't want to goto something new.

The batch number is printed at the bottom.

 

[wolfen281]

The batch number is printed at the bottom.

ruh roh...

lot#13415

 

[Hans-Werner]

ruh roh...

lot#13415

Oh, I am sorry my guess was wrong, it still is a batch with lower iodine concentration. The different look may be a result of storage and storage conditions. Like already mentioned, the discolorations are iodine, this still is correct.

The batches with the double iodine concentrations started a few weeks later. It are all batches with batch numbers 141.. and higher.

Again, I am sorry for my wrong first guess.