Brightwell Aquatics ChaetoGro Refugium Fertilizer for Chaetomorpha Algae

  • Sale
  • Regular price $35.00

ChaetoGro helps establish water chemistry promoting long-term chaetomorpha health and growth, assisting the algae to efficiently control unwanted nutrients in the system, such as phosphate and nitrate.  This multi-nutrient is phosphate and nitrate free, containing such as iron, cobalt, molybdenum, and more for elements to help chaetomorpha function.


  • For all marine aquariums & ULNS systems
  • Shrimp & Invertebrate safe
  • Phosphate & Nitrate free
  • Provides 13 elements critical to long-term health, growth, and coloration of aquatic plants
  • Well-suited to ULNS aquariums and designed for nutrient control of phosphates and nitrates by chaetomorpha uptake
  • Formulated utilizing extensive research on aquatic algae nutrient requirements

Technical Background

Algae requires nutrition in order to survive and thrive; those nutrients needed allow algal biological functions and chemical reactions to properly process. Brightwell Aquatics ChaetoGro provides the proper substances in concentrations (found by researchers) to be necessary for long-term health. These elements, and some of the processes that they are involved in, are:

  • Potassium - Protein synthesis, water and charge balance, enzyme activation
  • Boron - Chlorophyll production, flowering, root growth, cell function
  • Carbon - Required for all organic compounds
  • Calcium - Cell wall stability and permeability, enzyme activation, cell response to stimuli
  • Chlorine - Water and charge balance, photosynthesis
  • Iron - Required for photosynthesis, component of enzymes utilized in redox reactions
  • Magnesium - Component of chlorophyll, enzyme activation
  • Manganese - Formation of amino acids, enzyme activation
  • Molybdenum and Cobalt - Required for nitrate reduction
  • Nickel - Enzyme activation, processing of nitrogenous material
  • Sulfur - Component of proteins and the coenzymes that are involved with nutrient utilization and growth
  • Zinc - Chlorophyll production, enzyme activation

Note: ChaetoGro does not contain phosphorus or nitrogen 


Instructions Guidelines:

  • Shake product well before using.
  • Basic: For the first 2 weeks of use, add 5ml (1 capful) of product per 20 US-gallons of aquarium volume twice each week
  • Increase dosage thereafter depending upon perceived nutrient needs of chaeto algae
  • When used in this fashion, 500 ml treats up to 2,000 US-gallons (7,600 L)
  • Advanced: Daily dosing is recommended, as it maintains a more stable and natural environment than dosing weekly, in which nutrient concentrations spike just after dosing and then gradually decrease throughout the course of the week
    • To dose daily, add 6 drops per 20 US-gallons per day
    • Adjust dosing volume after one week in accordance with appearance of algae and perceived need for nutrients
  • Important: Brightwell recommends the use of MicroBacter7 and Reef Bio Fuel or Katalyst to maintain proper carbon levels for the Chaeto, as well as proper bacterial function in the system
  • For proper Chaeto growth, Brightwell recommends that the hobbyist maintain a minimum of .01 ppm phosphate and 3 to 5 ppm nitrates in the reef system. If levels fall below these values, proper nutrient control will not efficiently occur. If the levels are low, use NeoPhos or NeoNitro as directed on their labels, as necessary to bring them up to the proper level.
  • Caution: Keep out of reach of children. Not for human consumption.


Guaranteed Analysis: 0-0-1.30; Potassium (K) as Soluble Potash (K2O) (min) 1.30%; Boron 0.009%; Carbon 0.005%; Calcium 0.14%; Chlorine 0.39%; Cobalt 0.0004%; Iron 0.1%; Magnesium 0.4%; Manganese 0.0475%; Molybdenum 0.004%; Sulfur 0.16%; Zinc 0.002%.


Sources of Nutrients: Potassium sulfate, Calcium chloride, Magnesium sulfate, Potassium iodide, Iron EDTA, Zinc sulfate, Manganese chloride, Sodium tetraborate, Cobalt chloride, Sodium molybdate.


Other Ingredients: Purified water, Nickel chloride.