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Brightwell Aquatics Iodion - Liquid Iodine Supplement - Long Acting 250mL / 8.5oz


Item #: BW01024

In Stock

• Highly-concentrated, extended activity iodide solution.

• Provides iodide, which is important to hermatypic corals and other invertebrates harboring zooxanthellae,

macroalgae, and also to the health of fishes.

• Stronger than most competing products.

• The nature of iodide sources used makes Iodion more effective than standard iodide-solutions.

• Suitable for use by aquarium hobbyists of all skill and experience levels.

• Composed of purified water and ultra-high purity materials.

• Formulated by a marine scientist.

  • Liquid
  • 250-ml

Manufacturer information

Brightwell Aquatics Aquarium Supplies
The goal of Brightwell Aquatics is to provide the absolute highest quality, scientifically-sound products and customer service of any aquarium water care manufacturer, and to do it all in a straight-forward and honorable fashion. All Brightwell products are formulated by marine scientists with a passion for the aquarium hobby. They utilize the highest purity ingredients in concentrations that provide the most use to hobbyists. Nearly all Brightwell Aquatics products are over 99.9% pure. The usage guidelines of Brightwell Aquatics products are written in plain language but the company is always available to answer consumer questions. All products are lot numbered for quality control and customer service.

5 Stars


Reviewed on
May 07, 2020

Yes, I would recommend this.

Brightwell Aquatics Iodion

Pros: works fast

Cons: none

been dosing as recommended forever love this product

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Reviewed on
March 11, 2020

Yes, I would recommend this.

Really improved my soft corals

Pros: Inexpensive, had great coloration

Cons: The cap is difficult to open

So I have a couple large leather corals growing in my tank and I noticed that my zoas were not doing as well as in the past I was recommended adding 2x week. So far I have noticed better coloration in my zoas and leather coral. I might be a goof, but the cap may be the hardest thing to open without spilling some of the iodine.

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Reviewed on
May 30, 2018

Yes, I would recommend this.

bought for zoas

bought this to help with my zoas. didn't notice much difference but didn't lose any zoas either.

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Reviewed on
July 23, 2017

Yes, I would recommend this.

Must have for Soft Corals

Pros: The most concentrated on the market available. Amazing Results. using it for over 8 years.

Cons: Cap leaks, not big deal.

I use about 50% of recommended dosage with great results, specially on zoos and mushrooms. (i have mixed reef).
Just in my opinion its very concentrated product, so use at recommended amount only if you have lots of soft corals,
otherwise you may do more bad than good, specially if you have no skimmer. I've been using this product for over 8 years, product is great and I really recommend it.

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Reviewed on
June 26, 2017

Yes, I would recommend this.

Gotta have Iodide

I've been dosing Brightwell Aquatics Iodide for many years now. It is a must for inverts.

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john moffett

Reviewed on
June 03, 2013

Yes, I would recommend this.

Brightwell Aquatics Iodion - L

Excellent product. Great to use at half the recommended frequency if blind dosing. Your reef dwellers will thank you for it.

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Reviewed on
May 01, 2011

Yes, I would recommend this.

great stuff

It raises the iodine level quickly. We all know that one should closely monitor the (I) level at all times, and certainly while doing with this product. It does what it says!!

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arsenio torres

Reviewed on
May 28, 2009

Yes, I would recommend this.


Great product fast shipping...Thank You!

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Reviewed on
January 15, 2009

Yes, I would recommend this.

Increased Coral Color

I purchased a Salifert Iodine test kit, found my levels to be Zip, Nada, Zilch. Started dosing Brightwell Aquatics Iodion and only 1 week later I can see a change in several of my corals.

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