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Brightwell Aquatics Replenish - Liquid Trace & Minor Minerals for all Marine Aquaria 250mL / 8.5oz


Item #: BW01056

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Advanced Trace & Minor Element Supplement for all Marine Fish & Reef Aquaria

  • Unique complex that replaces trace and minor elements used by fishes, corals, and other invertebrates, and which are lost through chemical filtration (protein skimming and use of filtration media such as resins and activated carbon).
  • Provides 29 minor and trace minerals, all present in natural seawater ratios.
  • Does not contain minor or trace elements not expressly known to be utilized by marine organisms or take place in chemical interactions.
  • Composed of purified water and ultra-high purity materials.
  • Formulated by a marine scientist.
Technical Background
Replenish provides only those minor and trace elements found by oceanographers to exhibit non-conservative behavior in seawater (meaning that they are depleted by biological and chemical reactions taking place within the photic zone) and that are safe for human handling. Elements are present in natural seawater ratios (i.e. the ratios in which they are present in seawater). Since they are not depleted by biological nor chemical interactions, no minor or trace elements that are not expressly needed by aquatic organisms are present in this product; this includes unnecessary elements such as lithium, rubidium, and molybdenum.
Of the detectable elements in seawater, 11 are minor elements and 52 are trace elements. Between the two groups, at least 13 elements appear to be expressly-required for the growth of primary producers such as algae, and an additional 18 are either incorporated into living tissue/skeletal material or undergo chemical interactions that cause their depletion in surface waters. These elements are important to a number of enzymatic and vitamin-synthesis reactions for plants and animals alike; additionally, they influence pigmentation, and therefore coloration, of various organisms. Iron is utilized in the production of chloroplasts; it is very important to photosynthetic organisms such as phytoplankton, micro- and macroalgae, coralline algae, and zooxanthellae. Although iodine is a minor element, it is taken up by algae and aquatic plants more rapidly than other minor elements, and is not included in this product, but rather in separate supplements.
All Brightwell Aquatics liquid water care supplements are made with purified water and high purity materials. We develop formulae for aquaria based on empirical data, using observation and measurement rather than theory.

Instructions and Guidelines
Basic: Shake product well before using. Add ½ ml (~10 drops) of product per 25 US-gallons of aquarium water every other day. When used in this fashion, 250 ml treats up to 2,500 US-gallons (9,464 L).
Advanced: With the exceptions of iodine and iron, there are no hobbyist-grade test kits that provide reliable measurements of the concentrations of many minor and trace elements present in marine aquaria. It`s therefore not possible to chemically determine exactly how much of a trace and minor element supplement to dose; rather, you must rely on the appearance of the livestock to make that determination. We encourage new users of this product to dose 1 ml per 10 US-gallons weekly for the first four weeks of use; this corresponds to dosing 0.14 ml (~3 drops) per 10 US-gallons each day. Then, gradually increase the weekly dosage to 2 ml per 10 US-gallons over the following four weeks and maintain this dosage. Starting at a low dosage will not cause any harm to the livestock, and will enable you to notice subtle changes in the appearance of the system that indicate the effectiveness and need for the product. Daily dosing maintains more stable concentrations (and a more natural environment) than dosing weekly, in which the concentration of elements spikes just after dosing and then gradually decreases throughout the course of the week. Though trace elements are essential in reef and fish-only aquaria, the gross overdosing of a trace element supplement can be harmful to aquarium inhabitants. Minor and trace elements are made unavailable in marine aquaria largely by adsorption to particulate organic matter (POM); therefore, it is recommended that protein skimming and other means of POM removal from the aquarium be in operation at all times.

Caution: Keep out of reach of children. Not for human consumption.

Guaranteed Analysis
Zinc (min) 0.061 mg/oz.; Iron (min) 0.0063 mg/oz.; Manganese 0.00344 mg/oz.; (min) Cobalt (min) 0.000344 mg/oz.
Purified water, Barium chloride, Sodium metavanadate, Zinc sulfate, Nickel chloride, Chromium chloride, Sodium feredetate, Manganese chloride, Hafnium chloride, Cobalt chloride, Lanthanum chloride, Neodymium chloride, Cerium chloride, Silver chloride, Dysprosium chloride, Gadolinium chloride, Ytterbium chloride, Erbium chloride, Scandium chloride, Samarium chloride, Praseodymium chloride, Holmium chloride, Lutetium chloride, Terbium chloride, Europium chloride, Thulium chloride

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.

6 Stars


Reviewed on
August 01, 2020

Yes, I would recommend this.

Brightwell Aquatics Replenish - Liquid Trace & Minor Minerals

Pros: Good stuff

Cons: None

I've been using this quite a while and it seems to work great no problems.

Was this review helpful? 0 0


Reviewed on
December 12, 2019

Yes, I would recommend this.

Works great

Pros: Helps keep corals thriving and keeps trace elements in acceptable ranges.

Replenish when used as per directions will help keep your trace elements in acceptable ranges and will help keep corals thriving.

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Reviewed on
March 07, 2019

Yes, I would recommend this.

Great product

Pros: Lots of elements

Cons: None

Has a great mixture of trace elements. Avoids the need of having multiple products.

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gregg kielma

Reviewed on
March 08, 2015

Yes, I would recommend this.

Used it for years

Excellent product!

Was this review helpful? 0 2

joshua munoz

Reviewed on
September 08, 2014

Yes, I would recommend this.

Trace and Minor Elements

I think Brightwell did an excellent job in making this product. I've tried other trace element products and I've never seen fish enjoy a product so much. My fish and coral seem so much more alive. To maximize the benefits, I'm following the daily dosing instructions in combination with the Brightwell Vitamin supplement. Their fish vitamin supplement provides B vitamins for energy, which is meant to be combined with this product. In short, this product is awesome. :)

Was this review helpful? 3 0

matt white

Reviewed on
September 24, 2012

Yes, I would recommend this.

da bomb

I've been using brightwell products for over a year and am very happy with all their products!!!!!

Was this review helpful? 1 0


Reviewed on
September 27, 2009

Yes, I would recommend this.

Brightwell products are top

I use many brightwell products always good quality products. What's good about brightwell is alittle bit goes a long way

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