Seachem Reef Plus 250 mL – Vitamins, Amino Acids & Trace Nutrients for Reef Aquariums
Seachem Reef Plus 250 mL is a concentrated, full-spectrum nutritional supplement formulated for saltwater reef aquariums. It provides a broad blend of vitamins, amino acids, fatty acids, iodide, and trace minerals that support the normal growth, metabolism, tissue development, and pigment formation of corals and other desirable marine organisms.
Closed reef aquariums may gradually lose water-soluble vitamins and other nutrients through biological uptake, protein skimming, chemical filtration, oxidation, and routine aquarium maintenance. Reef Plus helps replenish these compounds without intentionally adding nitrate or phosphate.
The formula contains vitamin C, vitamin B12, thiamine, inositol, choline, amino acids, trace minerals, and other nutritional components. It may be added directly to the aquarium or used as a concentrated soak for frozen marine foods.
Key Features
- Full-Spectrum Reef Supplement: Provides vitamins, amino acids, fatty acids, iodide, and trace minerals
- Supports Coral Nutrition: Supplies compounds used in normal coral metabolism, tissue development, and growth
- High in Vitamin C & B-Complex Vitamins: Includes vitamin C, vitamin B12, thiamine, riboflavin, niacin, and other nutritional factors
- Contains Essential Amino Acids: Provides arginine, lysine, tyrosine, glutamate, and additional amino-acid sources
- Includes Trace Minerals: Supplies small amounts of iron, manganese, iodide, boron, zinc, and other trace elements
- Nitrate & Phosphate Free: Does not intentionally add nitrate or phosphate to the aquarium
- Direct Aquarium Dosing: May be added directly to a high-flow area of the reef system
- Food-Soak Option: Concentrated enough to be mixed with frozen marine foods
Product Information
- Brand: Seachem
- Product: Reef Plus
- Size: 250 mL
- Equivalent Size: Approximately 8.5 fl oz
- Product Type: Full-spectrum reef nutritional supplement
- Contains: Vitamins, amino acids, fatty acids, iodide, and trace minerals
- Aquarium Type: Saltwater and reef aquariums
- Standard Dosage: 5 mL per 20 US gallons twice weekly
- Food-Soak Dosage: 1 mL per approximately 15 mL, or 1 tablespoon, of food
- Storage: Refrigerate after opening
Best Used For
- SPS coral aquariums
- LPS coral aquariums
- Soft-coral systems
- Mixed reef aquariums
- Reef aquariums using heavy protein skimming
- Systems using activated carbon or chemical filtration
- Coral aquariums requiring broad nutritional supplementation
- Marine fish food enrichment
- Nano and medium reef aquariums
- Use alongside balanced calcium and alkalinity supplementation
Notable Nutritional Components
Seachem Reef Plus contains a broad range of nutrients and trace elements, including:
- Vitamin C, supplied as ascorbic acid
- Vitamin B12
- Thiamine
- Riboflavin
- Niacin
- Pantothenate
- Choline
- Inositol
- Arginine
- Lysine
- Tyrosine
- Glutamate
- Iodide
- Iron
- Manganese
- Boron
- Zinc
- Cobalt
- Molybdenum
- Bromide
- Additional trace minerals
The quantities of trace minerals are intentionally small because these elements are required only in trace concentrations. More is not necessarily better.
Directions for Aquarium Dosing
Use one capful, or 5 mL, of Seachem Reef Plus for every 20 US gallons of aquarium water twice per week or as required to support coral growth.
Add the measured dose directly to an area with strong water movement so it disperses quickly throughout the aquarium. Avoid pouring concentrated supplement directly onto coral tissue or other livestock.
Calculate the dose using the aquarium’s estimated actual water volume after accounting for live rock, sand, equipment, decorations, and sump displacement.
Approximate Dosage Guide
- 5-Gallon Aquarium: Approximately 1.25 mL twice weekly
- 10-Gallon Aquarium: Approximately 2.5 mL twice weekly
- 20-Gallon Aquarium: 5 mL twice weekly
- 30-Gallon Aquarium: Approximately 7.5 mL twice weekly
- 40-Gallon Aquarium: 10 mL twice weekly
- 55-Gallon Aquarium: Approximately 13.75 mL twice weekly
- 75-Gallon Aquarium: Approximately 18.75 mL twice weekly
- 100-Gallon Aquarium: 25 mL twice weekly
- 125-Gallon Aquarium: Approximately 31.25 mL twice weekly
- 150-Gallon Aquarium: Approximately 37.5 mL twice weekly
Use a dosing syringe or graduated measuring cup for accurate measurement, particularly in nano reef aquariums.
Food-Soak Directions
Reef Plus may also be used to enrich frozen marine food.
Mix approximately 1 mL of Reef Plus with about 15 mL, or one tablespoon, of food. Allow the food to absorb the supplement briefly before feeding it to the aquarium.
Feed only an amount the livestock can consume within a reasonable period. Remove or reduce excess food to avoid unnecessary organic waste and nutrient buildup.
Why Supplement Vitamins and Amino Acids?
Vitamins and amino acids participate in many biological processes, including protein formation, cellular metabolism, tissue maintenance, and normal growth.
Some nutrients may be supplied through foods and regular water changes, but their availability can vary depending on:
- The salt mix being used
- Fish and coral feeding frequency
- Coral biomass
- Protein-skimmer efficiency
- Activated-carbon use
- Oxidation and ozone
- Water-change schedule
- Biological uptake
Reef Plus offers a controlled way to replenish a broad spectrum of compounds without relying entirely on increased feeding.
Reef Plus and Coral Coloration
Trace minerals, vitamins, amino acids, suitable nutrition, and stable water chemistry may all contribute to normal coral pigment formation and tissue condition.
Reef Plus should not be marketed as a guaranteed coral-color enhancer. Coral coloration is also strongly influenced by:
- Coral genetics
- Lighting spectrum and intensity
- Nitrate and phosphate availability
- Feeding
- Alkalinity stability
- Water temperature
- Water flow
- Stress, pests, and disease
Adding excessive Reef Plus will not correct coloration problems caused by inappropriate lighting, unstable water chemistry, starvation, elevated nutrients, or coral-health problems.
Reef Plus and Polyp Extension
Some aquarists may observe changes in coral feeding behavior or polyp extension after adding nutritional supplements. However, polyp extension varies considerably among species and is affected by lighting, feeding time, water movement, fish activity, pests, and coral health.
Reef Plus should not be presented as a guaranteed treatment for poor polyp extension. Persistent retraction should be investigated rather than treated solely by increasing supplementation.
Reef Plus vs. Reef Trace
Reef Plus and Reef Trace overlap in some trace-element content, but they are not identical products.
- Reef Plus: Broad nutritional formula containing vitamins, amino acids, fatty acids, iodide, and trace minerals
- Reef Trace: Targeted blend of trace elements intended to replenish elements used by corals and other reef organisms
The products may be used within the same reef-care routine, but aquarists should account for the trace elements supplied by both products and avoid unnecessary overlapping supplementation.
Reef Plus vs. Coral Food
Reef Plus supplies dissolved vitamins, amino acids, fatty acids, and trace nutrients. It is not a complete particulate coral food.
Depending on the coral species, a complete feeding routine may also include:
- Phytoplankton
- Zooplankton
- Marine snow or suspended foods
- Frozen plankton
- Pellet or powdered coral foods
- Fish feeding that indirectly supports coral nutrition
Use foods and supplements according to the dietary needs of the livestock rather than assuming every coral requires the same feeding method.
Does Reef Plus Add Nitrate or Phosphate?
Seachem states that Reef Plus is nitrate- and phosphate-free. It does not intentionally supply either nutrient.
However, Reef Plus contains organic nutritional compounds. Excessive dosing may increase the organic load available to aquarium bacteria and may contribute indirectly to cloudy water, bacterial films, oxygen consumption, or nutrient accumulation.
Use the recommended amount and monitor the aquarium rather than assuming that a nitrate- and phosphate-free product cannot be overdosed.
Protein Skimmer Use
A protein skimmer does not necessarily need to remain off for the full period between Reef Plus doses. Seachem’s dosing schedule accounts for both biological use and some loss through protein skimming.
Some components are more likely to be removed by skimming than others. Many water-soluble ingredients remain dissolved and available within the aquarium.
Follow the standard dosing schedule and avoid compensating for skimmer use by automatically adding extra product.
Use with Ozone
Strong oxidizers such as ozone can destroy reducing compounds and vitamins contained in Reef Plus.
Temporarily discontinue ozone while dosing Reef Plus so the supplement is not immediately oxidized. Restart ozone according to the equipment manufacturer’s directions after the supplement has had time to disperse.
Do not disable essential aquarium aeration or circulation.
Storage Instructions
Refrigerate Reef Plus after opening. Refrigeration helps preserve the organic ingredients, vitamins, amino acids, and fatty acids in the formula.
Keep the cap tightly closed and avoid contaminating the bottle with aquarium water, food residue, dirty syringes, or dosing equipment.
Do not freeze the product. Discard it if the bottle develops signs of contamination, unusual swelling, or an abnormal odor beyond the product’s normal scent.
Using Reef Plus with Other Reef Supplements
Reef Plus may be used alongside appropriate calcium, alkalinity, magnesium, and nutrient supplements. It does not replace these major reef chemistry components.
Potential companion products may include:
- Seachem Reef Fusion 1 and Reef Fusion 2
- Seachem Reef Complete
- Seachem Reef Builder
- Seachem Reef Carbonate
- Seachem Reef Magnesium
- Seachem Reef Trace
- Seachem Reef Iodide
- Seachem Reef Nitrogen or Reef Phosphorus when testing confirms a need
Review the ingredients in every supplement before combining products. Avoid dosing several overlapping trace-element products at full strength without testing or evaluating aquarium demand.
Dosing Tips
- Refrigerate the bottle after opening
- Use 5 mL per 20 gallons twice weekly
- Calculate the dose from actual aquarium water volume
- Use a syringe for nano aquarium dosing
- Add the supplement to an area with strong water movement
- Avoid pouring concentrated product directly onto corals
- Use 1 mL per tablespoon of food for food enrichment
- Do not automatically increase dosing because a protein skimmer is operating
- Temporarily discontinue ozone while dosing
- Monitor coral condition and aquarium nutrient trends
Important Reef Aquarium Note
Reef Plus is a nutritional and trace-element supplement, not a medication or complete coral food. It does not treat coral bleaching, tissue recession, pests, bacterial infections, parasites, or poor water quality.
Healthy coral growth depends on stable salinity, temperature, alkalinity, calcium, magnesium, nutrients, lighting, water movement, feeding, and overall aquarium maturity.
More supplement does not necessarily produce faster growth or brighter coloration. Excess organic supplementation may contribute to bacterial growth, cloudy water, oxygen depletion, or unwanted nutrient accumulation.
Reef Plus does not replace regular water changes, accurate testing, protein-skimmer maintenance, mechanical filtration, appropriate feeding, or complete reef aquarium husbandry.
Frequently Asked Questions
What is Seachem Reef Plus used for?
Reef Plus supplies vitamins, amino acids, fatty acids, iodide, and trace minerals that support normal coral and marine-organism nutrition.
What does Reef Plus contain?
It contains vitamin C, vitamin B12, B-complex vitamins, amino acids, fatty acids, iodide, iron, manganese, boron, zinc, and other trace minerals.
How much Reef Plus should I use?
Use 5 mL for every 20 US gallons twice per week or as required to support coral growth.
Is the official dosage once or twice per week?
Seachem’s official dosage is twice per week.
Can Reef Plus be added directly to the aquarium?
Yes. Add it to an area with good water movement so it disperses throughout the system.
Can Reef Plus be used as a food soak?
Yes. Mix approximately 1 mL with 15 mL, or one tablespoon, of frozen food.
Does Reef Plus need refrigeration?
Yes. Refrigerate the product after opening.
Is Reef Plus the same as Reef Trace?
No. Reef Plus contains vitamins, amino acids, fatty acids, and trace minerals. Reef Trace is primarily a targeted trace-element supplement.
Can Reef Plus and Reef Trace be used together?
Yes, but account for overlapping trace elements and avoid unnecessary overdosing.
Does Reef Plus contain amino acids?
Yes. The formula includes amino acids such as arginine, lysine, tyrosine, and glutamate.
Does Reef Plus contain fatty acids?
Yes. Seachem identifies Reef Plus as containing fatty acids in addition to vitamins, amino acids, and trace minerals.
Does Reef Plus contain iodide?
Yes. It contains iodide derived from potassium iodide.
Does Reef Plus add nitrate or phosphate?
Seachem states that Reef Plus is nitrate- and phosphate-free.
Can Reef Plus still be overdosed?
Yes. Excess organic supplementation may increase bacterial activity, cloudiness, oxygen demand, or nutrient accumulation.
Should the protein skimmer be turned off?
The normal twice-weekly dosing schedule accounts for some loss through skimming. Do not automatically add more because a skimmer is operating.
Should ozone be turned off?
Yes. Strong oxidation from ozone can destroy vitamins and other reducing compounds in Reef Plus.
Does Reef Plus guarantee improved coral coloration?
No. It supports nutrient availability, but coloration also depends on lighting, genetics, feeding, nutrients, and stable water chemistry.
Does Reef Plus guarantee improved polyp extension?
No. Polyp extension is affected by many factors, including water flow, lighting, feeding, fish activity, pests, and coral health.
Is Reef Plus suitable for SPS corals?
Yes. It may be used in SPS, LPS, soft-coral, and mixed reef aquariums when dosed as directed.
Does Reef Plus replace coral food?
No. It supplies dissolved nutritional compounds but does not replace species-appropriate particulate or planktonic foods.
Does Reef Plus replace water changes?
No. It supplements nutrients but does not replace water changes, testing, filtration, feeding, or complete reef maintenance.
Available at Tropical Treasures Wyo
Seachem Reef Plus 250 mL provides a concentrated blend of vitamins, amino acids, fatty acids, iodide, and trace minerals for SPS, LPS, soft-coral, and mixed reef aquariums.
Visit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop Seachem reef supplements, coral foods, calcium and alkalinity products, marine test kits, filtration media, and saltwater aquarium care essentials.
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