BRIGHTWELL ChaetoGRO Macroalgae dosing Expand



ChaetoGro from Brightwell is a phosphate and nitrate free multi-nutrient fertilizer specially composed for an optimized macroalgae growth like Chaetomorpha / Chaeto and other algae species in the marine aquarium.

It is as well Copper free ( unlike many other aquarium fertilizers ) and a great ready mixed solution for all planted marine aquariums and ULNS systems.

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£ 14.95

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BRIGHTWELL ChaetoGRO 250ml / 500ml

ChaetoGro provides 13 important elements which are crucial to grow successful macroalgae in the planted Display Tank or planted refugium/sump. It will support a healthy macroalgae growth which can more effectively help to lower the Nitrate and Phosphate levels in the marine aquarium. 

Technical Background

Macroalgae will need besides good lighting Major and Minor nutrients for an optimal growth in the marine aquarium.
ChaetoGro from Brightwell Aquatics provides these minerals in concentrations found by researchers to be necessary for long-term health of various algae species. 

Instructions Guidelines

  • Shake BRIGHTWELL ChaetoGRO well before using.
  • Starter recommendation: 
    Dose 5ml (1 capful) of it per 20 US-gallons(76l) of aquarium water twice each week for the first 2 weeks of use and increase the dosage when necessary thereafter.
    When used in this way, 500 ml will treat up to 7,600 L
  • Expert recommendation:
    To maintain a more stable and natural environment a daily dosing is more recommended than dosing once a week. 
    For daily dosing add 8 drops per 100 l and adjust dosing volume after one week when necessary depending on the macroalgae growth and its need for nutrients.
  • For a strong Chaeto growth it is recommended to maintain a minimum Nitrate level of 3-5 ppm and phosphate level of 0.01 ppm, as otherwise an optimum macroalgae growth may not be possible.


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%; Calcium 0.14%; Carbon 0.005%; Chlorine 0.39%; Cobalt 0.0004%; Iron 0.1%; Magnesium 0.4%; Manganese 0.0475%; Sulfur 0.16%; Molybdenum 0.004%; Zinc 0.002%.

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100% Satisfaction Guarantee

We want you to be fully happy with your new algae addition. Therefore we offer you a hassle free Satisfaction Guarantee.  

If you are not 100%  happy with the macroalgae you received on arrival we will refund you the full money back *1.
We even will cover the return costs. The refund will be offered after we arrived and checked the returned algae.

*1 = Valid for UK Orders only, please see our Terms for EU orders HERE 

Top Quality Macro Algae Guarantee

We offer you marine algae from our mature macro algae mother colonies in a premium quality & 100% healthy. Sustainably grown in the UK.

All macro algae we sell will be normally heat sealed and wet wrapped when posted to you, protected in a small box which assures that it doesn't get damaged while in transit. 

Best Price Guarantee

We won't be beaten on the Premium Quality of our Macroalgae cultures, and surely not on the price either!

Have you seen the same macro algae somewhere else cheaper?

Please just send us a message HERE and we will check your request within 24 hours ( working days only ).

When we can match the other price we will send you a discounted offer which will be valid for the next 7 days after receiving our email. 
This offer will be just valid for purchases using the email address provided before.

The price match offer is only valid for identical, same size/amount and available macroalgae species.
As a proud UK based tax paying business, we don't price match any offers against auction sites or from private sellers.

The price match offer is just valid for UK deliveries. We reserve the right to refuse a price match request.

If you have any questions please don't hesitate to contact us, please.

Your Livealgae UK

Livealgae UK

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