8 - 20µm Phytoplankton Suspension for Soft Corals, Clams, Sponges, and Other Filter-Feeders
- Provides phytoplankton ranging in size from 8 - 20µm.
- Ideally-sized for many soft corals, clams, sponges,tunicates, tube worms, and larval invertebrates.
- Formulated to provide over 50-million phytoplanktocells per ml.
- Does not require refrigeration.
- Supplemented with a proprietary amino acid to aid icoloration of invertebrates.
- Formulated by a marine scientist.
Brightwell Aquatics PhytoGold-M is a concentrated suspension of Thalassiosira sp., a unicellular marine algae ranging in size from 5 - 20µm and having a diverse nutritional profile; it is rich in the omega-3 fatty acids ARA and DHA, as well as in several important amino acids. Thalassiosira falls within the size class of plankton known as nanoplankton (2.0 - 20.0µm), which is sometimes considered microplankton. It is the proper size for feeding many species of soft corals (particularly those with short tentacles), as well as clams and other bivalves, sponges, tunicates (sea squirts), plumed worms (Christmas tree worms, feather dusters, etc.), bryozoans, larval invertebrates such as those of many crustaceans and bivalves, and juvenile fishes. Though Thalassiosira provides a number of amino acids, one that is not naturally present has been added to PhytoGold-M; this proprietary amino acid has been shown in studies to increase coloration of corals and other marine invertebrates. Additionally, a small percentage of vitamin-C is present to increase the benefits of PhytoGold-M, particularly to corals and their allies that have recently undergone fragmenting or propagation. PhytoGold-M may be used in conjunction with other planktonic suspensions to provide a complete range of sizes to filter-feeding and planktivorous organisms.
PhytoGold-M does not require refrigeration, however storage in a cool, shaded area will prolong the activity of the vitamins. Refrigeration will maximize the shelf-life of the product.
Instructions and Guidelines
Shake product well before using. Turn protein skimmer and other forms of mechanical filtration off prior to adding food suspensions to aquaria, and allow 10 - 15 minutes after feeding before resuming operation of filtration.
Target Feeding (recommended): Target feeding may be carried out with a lengthy piece of rigid air tubing, plastic syringe, pipette, dropper, or similar device; pour 5 ml (1 capful) into a small container and suck a portion of this into the feeding device, then slowly discharge the contents of the device 2 - 4” upstream of the target organism(s). Repeat these steps as deemed necessary. Rinse the portion (inside and outside) of the feeder that was placed into aquarium water before placing it into this bottle (if feeding directly from the bottle rather than from a separate container); failure to do so will contaminate the product and encourage it to decompose.
Broadcast Feeding: Add up to 5 ml per 50 gallons of water in the entire aquarium system in an area of rapid water movement daily for the first four weeks of use; thereafter, the dosage may be increased as desired. Notes: Add no more than 5 ml total of liquid food suspensions per 50 gallons of water in the entire aquarium system daily for the first four weeks of use; thereafter, the dosage may be gradually increased as desired. Starting out at a low dosage and gradually increasing it with time will allow the biological filtration in the aquarium to adjust to the increase in nutrients and prevent water quality from deteriorating. Planktonic food suspensions (such as this one) are best utilized by target feeding specific invertebrates in an aquarium; in doing so, the majority of the food may be consumed by the intended organisms rather than ending up in filtration media or indirectly impacting water quality (as often occurs when indescriminately “broadcast feeding” by adding liquid food suspensions to a stream of water and allowing the contents to disperse randomly throughout the aquarium system).
Caution: Keep out of reach of children. Not for human consumption.
Moisture (max) 94.23%, crude protein (min) 0.52%, crude fat (min) 0.27%, crude fiber (min) 1.27%, ash (max) 6.25%.
Purified water, Thalassiosira sp. (phytoplankton), proprietary amino acids, Ascorbic acid, Citric acid.
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.
Most orders under $29 ship for only $2.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in up to 7 business days after it ships out.
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in up to 7 business days. Just spend $29 or more!
Over 90% of shoppers receive their orders within 1-2 business days. Upgrade from free economy shipping to faster shipping for only $2.99—or spend $250 and we'll upgrade you automatically!
Expedited shipping services are available for most products if you are in a hurry. Get guaranteed delivery in 2 business days, 1 business day, or next day by 10:30 am. Costs vary by location.
Same-day shipping is available Monday-Friday for most products—place your order by 10:30 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!
Learn More About Shipping
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
We are unable to accept returns of Digital Aquatics, Neptune Systems, Vertex Aquaristik, Aqua Illumination (AI), EcoTech Marine, GHL, or Seneye products once the manufacturer's packaging seals have been broken.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
Learn More About Returns
Rack up reward points to earn discounts on future purchases! You can earn reward points by creating an account, writing reviews, referring friends, subscribing to our newsletter, buying products, and more!
- Earn 5 reward points for every $1 you spend to get 5% cash back
- Earn 1 reward point for every $1 you spend to get 1% cash back
Abyzz, American Marine, AquaIllumination, AutoAqua, CoralVue, Digital Aquatics, EcoTech Marine, Giesemann, GHL, Hanna Instruments, Hydor, IceCap, Innovative Marine, Iwaki, Kamoer, Kessil, Klir, Korallen-Zucht, Maxspect, Mur-lok, Nano Box, Neptune Systems, NYOS, Oceanbox Designs, Pax Bellum, Radium, Red Sea, Reef Glass, Reef Octopus, Seneye, Somatic, Tunze, Vertex Aquaristik, and Waterbox Aquariums
You can also get bonus reward points by purchasing select items during special sales and promotions.
Learn More About Rewards