• Skip to main content
AlgaeBarn

AlgaeBarn

Marine Aquariums Made Easy!

    • Shop See All
      • Ultimate Packs See All
      • Ultimate Refugium Starter
      • Clam Keeper Kits
      • Ultimate Ecopack
      • Mandarin Feeder Kit
      • Hair Algae Killer Kit
      • See All Ultimate Packs
      • Live Foods See All
      • Copepods
        • Ecopods
        • 5280 Pods
        • Galaxy Pods
        • Poseidon's Feast
        • Tisbe Pods
        • Tig Pods
      • Food Combos
        • Ecopods & Phyto
        • Galaxy Pods & Phyto
        • Poseidon's & Phyto
        • Tig Pods & Phyto
        • Tisbe Pods & Phyto
      • Phytoplankton
        • Oceanmagik
      • Brine Shrimp
        • Simple Brine
        • Nano Brine Shrimp
        • Premium Brine Shrimp Eggs
        • Magnetic Brine Shrimp Eggs
      • Most Popular Products
        • Galaxy Pods 5 Species Copepod Blend

          Galaxy Pods

          $66 – $229
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Ecopods 4 Pack Special

          $99
          Shop Now
        • Galaxy Pods & Phyto Combo

          $80
          Shop Now
        • 5280 Pods

          $45
          Shop Now
      • Macroalgae See All
      • Clean Macro Series
        • Clean Chaeto
        • Clean Sea Lettuce
        • Clean Green Ogo
        • Clean Mocha Ogo
        • Clean Mocha Spike Sphere
        • Pom Pom
        • Red Ogo
        • Red Spike Sphere
        • Red Spaghetti
        • Red Mangrove
      • Premium Rare Macro
        • Leafy Ogo
        • Blue Hypnea
        • Dragon's Tongue
        • Thick Ogo
      • Most Popular Products
        • Clean Chaeto

          $40 – $125
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Clean Sea Lettuce

          $30 – $95
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Red Ogo

          $30 – $80
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Red Mangrove

          $13
          Shop Now
      • Captive Bred Fish See All
      • Gobies
        • Green Mandarin
        • Court Jester Goby
        • Watchman Goby
        • White Spotted Goby
      • AngelFish
        • Biota Coral Beauty
        • Maculosus Angel
        • Majestic Angel
        • Swallowtail Angel
      • Tangs
        • Yellow Tang
        • Blue Tang
      • More Species
        • Grammas
        • FileFish
        • Blennies
        • Damsel
        • ClownFish
        • RabbitFish
      • Most Popular Products
        • Blue Mandarin

          BIOTA Green Mandarin

          $99 – $209
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • ORA Neon Goby

          $35
          Shop Now
        • Captive Bred Yellow Tangs by BIOTA

          BIOTA Yellow Tang

          $250
          Shop Now
        • ORA Premium Picasso

          $145 – $300
          Shop Now This product has multiple variants. The options may be chosen on the product page
      • Captive Bred Invertebrates See All
      • Clams
        • Ora Derasa Clam
        • Squamosa Clam
        • Ora Gigas Clam
        • Ora Maxima Clam
        • Ora Hippopus Clam
      • Shrimp
        • Ora Peppermint Shrimp
        • Harlequin Shrimp
      • Snails
        • Cerith Snails
        • Trochus Snail
        • Nassarius Snails
      • Urchins
        • Ora Tuxedo Urchin
        • Ora Pincushion Urchin
      • Most Popular Products
        • Animated gif of peppermint shrimp

          Peppermint Shrimp

          $49 – $119
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • 10 Cerith Snails

          Cerith Snail

          $25 – $79
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • pincushion urchin lytechinus variegatus reef safe and captive bred by ora for sale at algaebarn

          Pincushion Urchin

          $29 – $99
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Gold Maxima Clam Bed

          ORA Maxima Clam

          $80 – $150
          Shop Now This product has multiple variants. The options may be chosen on the product page
      • Corals See All
      • LPS Corals
        • Biota Pearl Bubble
        • ORA Pearl Bubble
        • ORA Marshall Island Goniopora
        • ORA Marshall Island Hammer
      • SPS Corals
        • ORA Pearlberry Acropora
        • ORA Micronesian Imperial Acropora
        • ORA Turquoise Acropora
        • ORA Micronesian Yellow Porites
      • Soft Corals
        • BIOTA White Polyp Toadstool
        • ORA Long Polyp Leather Coral
        • ORA Silver Xenia
        • ORA Pulsing Xenia
      • Frag Packs
      • Most Popular Products
        • Biota Pearl Bubble Coral

          $65
          Notify Me When in Stock
        • ORA Pearlberry Acropora

          $290
          Notify Me When in Stock
        • BIOTA White Polyp Toadstool

          $70
          Notify Me When in Stock
      • Additives & Bacteria See All
      • Live Cultures & Bacteria
        • Turbostart 900 Saltwater
        • Aquarium Cycle Kit
        • Coralline Algae
        • PNS Yellosno
        • PNS Probio™
      • Additives & Chemicals
        • Nitrocycle
        • Clarifier
        • Fritz A.C.C.R
        • Fritz RPM Salt
      • Most Popular Products
        • Mandarin Feeder Kit™

          $66
          Shop Now
        • Coralline Algae in a Bottle, In Pink or Purple!

          Coralline Algae

          $22 – $44
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • MarinePure 10 Cubes

          2″ Cubes

          $5 – $99
          Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
        • Ultimate EcoPack

          $100
          Shop Now
      • Aquarium Supplies See All
      • Fuge Lighting
        • AI Fuge 16HD Light
        • Kessil A360X Fuge Light
        • Kessil H160
        • Kessil H80
        • Chaetomax
      • Biomedia
        • Marinepure Gems
        • Marinepure Rocks
        • Marinepure Plate
        • Marinepure Cubes
        • Marinepure Spheres
      • Foods
        • Dragon Roe
        • Simple Brine
        • Can'O Cyclops
        • Benereef™
        • Fresco Cyclops
      • Rock & Sand
        • Dry Rock
        • Clam Rocks
      • Most Popular Products
        • Mandarin Feeder Kit™

          $66
          Shop Now
        • Coralline Algae in a Bottle, In Pink or Purple!

          Coralline Algae

          $22 – $44
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • MarinePure 10 Cubes

          2″ Cubes

          $5 – $99
          Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
        • Ultimate EcoPack

          $100
          Shop Now
      • CADE Aquariums See All
      • Reef Series
        • CADE REEF 500 S2
        • CADE REEF 600 S2
        • CADE REEF 900 S2
        • CADE REEF 1200 S2
        • CADE REEF 1500 S2
        • CADE REEF 1800 S2
        • CADE REEF 2100 S2
      • Frag Series
        • CADE Frag 600 S2/F
        • CADE Frag 900 S2/F
        • CADE Frag 1200 S2/F
        • CADE Frag 1500 S2/F
      • Peninsula Series
        • CADE Peninsula 1200 S2/P
        • CADE Peninsula 1500 S2/P
        • CADE Peninsula 1800 S2/P
      • Most Popular Products
        • CADE REEF 2100 S2

          $7,225
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • CADE Peninsula 1500 S2/P

          $5,525
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • CADE REEF 1200 S2

          $4,125
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • CADE Frag 900 S2/F

          $3,275
          Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Blog
  • Shipping
  • Our Guarantee
  • Help
  • Deals
  • Sign In
  • Cart
You are here: Home / Aquarium Supplies / Aquarium Bacteria in a Bottle / PNS YelloSno™
PNS YelloSno
5 reviews

PNS YelloSno™

  • LIVE SEED AND FEED
  • Shipping Days
    Mon, Tue, Wed
  • Free 2-3 Days
    Transport at $59+

$35.99

PNS YelloSno™ greatly enriches the diet of corals and other filter feeders by mimicking a natural marine snowfall. Packed with essential amino acids, proteins, and vitamins, it supports healthy growth and development. Flash pasteurized for extended shelf life, this improved formula is now available with updated packaging and is back in stock!

Please note: We’re continuously working to improve our products and packaging, so your order may arrive with updated packaging that may look slightly different from the images shown.

Earn 36 PodPoints
Quantity

Save with Subscription:

Total:

$35.99

Saved

-

  • Description
  • FAQ

Description

The Ultimate Marine Snow Simulation for Filter-Feeders: Nourish the entire reef—from copepods to corals—with PNS YelloSno™

The water columns of marine environments—even the relatively clear waters over tropical coral reefs—can become littered with tiny bits of suspended organic matter. On reefs, this material may wash in from adjacent habitats or accumulate locally from animal feces, expelled coral mucus, copepod exoskeletons, etc. While not particularly wholesome by themselves, these particulates are nutritionally enriched as they are colonized by various types of heterotrophic bacteria.

Particles consolidate as the musilage secreted by resident microbes causes them to become sticky; this reduces their buoyancy and causes them to slowly sink. Such aggregations are referred to as marine snow. Suspended and settled marine snow is an important food source for filter-feeders and detritivores respectively. Purple nonsulfur bacteria (PNSB), which are highly digestible and nutritious, are known to be commonly associated with marine snow.

Composed of an all-natural chitin substrate that mimics copepod exoskeleton fragments and coated with purple nonsulfur bacteria, PNS YelloSno™ effectively simulates a marine snowfall. With a wide particle size range, this product may be captured and consumed by a large variety of suspension-feeding animals (e.g. corals). It is rich in protein, vitamins and amino acids. Just following a curing process, PNS YelloSno™ is preserved for a long shelf life by flash pasteurization.

PNS YelloSno™ is specially formulated for use in saltwater aquaria. And, it is completely safe, non-toxic and non-pathogenic. PNSB may vary in color from yellow to red to purple depending upon pigment content; product color may vary from yellow to dull orange. Best used with the live companion product PNS ProBio™ in the economical PNS Product Combo. Need a side of pods and phyto with the combo? Then check out the Ultimate Ecopack!

The most significant benefits are as follows:

Enriched by its coating of microbes and their biofilm, marine snow is a highly nutritious food source for corals and filter-feeding invertebrates. PNS YelloSno™ replicates a marine snowfall, delivering B vitamins and bioavailable minerals and trace elements to aquarium inhabitants ranging from copepods to clams to corals–even certain groups of beneficial bacteria. Compared to similar types of prepared reef aquarium diets, PNS YelloSno™ has the following advantages:

  1. It has an extensive shelf life (pasteurized, requires refrigeration).
  2. It is easily measured and dosed.
  3. It is accepted by many aquarium filter-feeders and detritivores.
  4. Many users report increased polyp extension (great for “priming” corals before main feeding).
  5. It is rich in protein and B vitamins.
  6. It agglomerates into a very wide range of particle sizes.

Directions and Usage for PNS YelloSno™:

Keep refrigerated. Treats 500 gallons. Suggested dosage is 1.0 mL/gal/day; however, dosage may be safely increased/decreased incrementally to suit individual needs. May be mixed with other coral foods/suspension diets (scan QR code on bottle to review special feeding instructions). Alternatively, may be used to ‘prime’ corals (eliciting polyp extension) prior to main feeding. Disperse broadly into the water from an area of moderate flow. For optimal results, remove/bypass mechanical filter media for one hour following each dose.

Contains a proprietary blend of natural chitin-based microparticles and growth medium fermented with purple nonsulfur bacteria. All contents formulated for aquarium use only; not for human consumption!

Please note: We’re continuously working to improve our products and packaging, so your order may arrive with updated packaging that may look slightly different from the images shown.

FAQ

Weight 1 lbs
Dimensions 3 × 3 × 6 in

Customer Reviews

Based on 5 reviews
Write a review
80%
(4)
0%
(0)
0%
(0)
20%
(1)
0%
(0)
R
ROBERT LAVIN
Best coral food

This is my standard coral food. Always a bottle in the frig.

I have tried other foods but, this seems to be the best.

W
William Hites
Absolutely Fantastic!

The happiness of my copepods multiplied by 10 - almost overnight population increase! This has a great potential benefit of supplying heterotrophic purple bacteria (non-sulphur) with B12 as well, enabling increased nitrogen/ nitrate etc, processing. Brilliant product!

R
Robert Kolega
1st dose it worked but after bottle was opened the rest of bottle turned rancid

I actually saw it work…opened a fresh bottle with an expiration date 4 months down the road…so the first dose was cool just like advertised I did a night lights off application and used a flashlight to check it out and I saw what looked like ‘snow flakes’ all over and around in my 90 gallon reef tank. The next day my corals and polyps were all excited and looked the healthiest I’ve ever seen…so I was looking forward to the next dose 3 days later…well I pulled out the tightly closed refrigerated bottle that I shook lightly a few times a day. Well it looked a darker color and stunk more but I still dosed the tank the same way…so get this lol (actually not funny) I had no happy ‘snow flake experience and my tank was brown cloudy the next day my corals were pissed and looked sick for a week even with a 20% water change and I had UV sterilizer protein skimmer and sump with healthy refugium working overtime to try and get everything back to it’s normal happy self. So I still have the bottle in my fridge it doesn’t expire for 4 months…I’m throwing the rest away not going to do this to my tank again

m
matthew.k.wyatt

Stuff smells like egg farts but the feeding reaction from my coral was 100%

r
robinsmichr

I’ve just started using this product, so in one sense - it’s too early to write a review. I keep several corals that need to be fed - scleronepthea, stereonepthea, NPS gorgonians etc.

I’ve been using oceanmajik mixed with newly hatched brine shrimp for a while with good results. At this point I’m going to alternate using the Yellosno and the brine shrimp mixed with oceanmajik.

I’ll try to get on here after several months to add to share my results.

Latest News from the AlgaeLab

Our team is hard at work studying how marine ecosystems behave so that you can build your tank with the perfect components!

PNS Deep Cycle

Harnessing the Power of PNS Deep Cycle for a Thriving Reef Aquarium

Reef aquariums are a testament to the beauty and complexity of marine ecosystems. Yet, one fundamental difference sets them apart from natural coral

Read More about Harnessing the Power of PNS Deep Cycle for a Thriving Reef Aquarium

How hard is it to keep a refugium?

Adding a refugium to the reef tank system can be a game changer for some reef keepers! Most experienced hobbyists agree that a refugiums’ natural

Read More about How hard is it to keep a refugium?

Keeping the Gigas Clam

There is something almost archetypal in the legend of man-eating clams. Perhaps this evokes allegorical imagery of a greedy or overly plucky sort of fool

Read More about Keeping the Gigas Clam

More Great Products

  • Simple Brine

    $35
    Notify Me When in Stock
  • bloodworms

    FRESCO Chironomus

    $13.50
    Notify Me When in Stock
  • Dragon Roe - Frozen Fish food

    Dragon Roe

    $30
    Shop Now
  • cyclops

    FRESCO Cyclops

    $13.50
    Notify Me When in Stock

Company

  • About Us
  • The AlgaeLab Blog
  • Our Team
  • Careers
  • FAQ

Get in Touch

  • Contact Us
  • AOA Claim Form
  • Press Inquiries
  • Call Us: 772-444-7637

Policies

  • Legendary AOA Guarantee
  • Terms & Conditions
  • Privacy Policy
  • Accessibility Statement

Other

  • Store Locator
  • Wholesale & B2B inquired
  • Business Location

Subscribe to our Newsletter

Join our mission to build a more sustainable aquarium hobby, one tank at a time!

Copyright 2025, AlgaeBarn LLC - Live Copepods and Phytoplankton