NPX BioPellets Julian Sprung 200L ( 50 Gal )

Regular price $19.99
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Livestock orders are double-bagged, insulated, and shipped with a heat or ice pack based on your destination's weather, so your fish and coral arrive healthy and ready for your tank.

Free shipping over $299
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Two Little Fishies NPX Bioplastics (Julian Sprung) are biodegradable polymer pellets designed to naturally reduce nitrate (NO₃) and phosphate (PO₄) in marine aquariums. The pellets provide a continuous carbon source that feeds beneficial bacteria. As the bacteria grow, they consume nitrate and phosphate, then are exported by your protein skimmer or become food for filter-feeding corals, clams, sponges, and feather dusters.  

Key benefits:

  • Naturally lowers nitrate and phosphate.
  • Reduces nuisance algae caused by excess nutrients.
  • Encourages beneficial bacterial growth.
  • Provides an additional food source for filter-feeding invertebrates.
  • Slowly dissolves over time, requiring only periodic replenishment.  

How to use:

  • Best used in a fluidized reactor (such as a PhosBan Reactor) so the pellets tumble gently.
  • Use with a protein skimmer, which is essential for exporting the bacteria and nutrients.
  • Start with half the recommended amount if your nutrients are high, then gradually increase over several weeks to reduce the risk of a bacterial bloom.
  • Top off the pellets every 3–6 months as they are consumed.  

If you’re running a reef tank, NPX Bioplastics are an excellent option for maintaining low nutrients, but they should be introduced gradually and monitored with regular nitrate and phosphate testing to avoid stripping nutrients too quickly.

All livestock ships via FedEx Priority Overnight, double-bagged and temperature-protected with a heat or ice pack as needed for your destination.

Florida orders under $299 ship for $25; out-of-state orders under $299 ship for $40. Orders over $299 ship free. We don't currently ship to Alaska, Hawaii, Puerto Rico, or outside the continental U.S.

Free in-store pickup is always available — contact us for details.

If your coral arrives dead on arrival (DOA), report it within 2 hours of the delivery time shown on your FedEx tracking — email a clear photo to info@strictlyfishmiami.com and we'll issue a store credit for the purchase price of the livestock.

See our full Refund Policy for details.