Brightwell Aquatics

Florin-I - Iodide Supplement for Freshwater Shrimp Tanks (500 mL)

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Iodide Supplement for Ornamental Shrimp in Freshwater Planted Aquariums

  • Copper free & shrimp safe
  • Provides the idodide for necessary for crustacean molting
  • Formulated specifically for ornamental freshwater and brackish water crustaceans maintained in planted and/or biotope aquariums
  • Helps prevent iodine-deficient issues in fish, such as goiter
  • Time-released form
  • Helps establish and maintain proper water chemistry in planted and community freshwater aquaria


Shrimp, lobsters, and crabs have an outer skeleton made of a combination of chitin and calcium carbonate. These crustaceans grow by shedding their old exoskeleton and producing a new one (molting). When they are young, they molt frequently until they reach adulthood, after which molting continues but at a slower rate. Adding iodine to closed aquatic systems that house crustaceans has consistently been shown to stimulate molting in specimens that haven't molted before.

Florin-I is a supplement that provides iodine and iodide to crustaceans. The iodine is released slowly over time, while the iodide is available as a free ion. To achieve the best results, it is important to feed the crustaceans appropriate foods and maintain the water chemistry within the recommended ranges. Florin Delta GH+, Florin Delta KH+, NeoTiger KH+/GH+, or Caridina GH+ supplements can help maintain the proper levels of total dissolved solids (TDS), general hardness, alkalinity, and elements that enhance the coloration and food utilization of crustaceans. FlorinMulti can also be used to provide additional essential elements for their well-being.


Instructions & Guidelines

Does not require refrigeration. Not impacted by temporary freezing.

Shake product for 3 - 5 seconds before each use. Begin dosing by adding 1/2 capful or 2.0 ml or 1 pump per 8 US-gallons (30 L) in the aquarium every day for a period of 10 days. If no molting occurs, then dosage may be increased by 2 ml or 2/5 capful or one pump additional per 16 US-gallons every day. Once crustacean molts, continue dosing rate and volume for an additional 5 days, then decrease to 2.0 ml or 2/5 capful per 30 US-gallons (114 L) every day for 30-days. Thereafter, dose the standard dose of 2 ml per 30 gallons twice a week. If equipped with a pump, pump is 2 ml.

Daily dosing is critical to eliciting the molting process. Crustaceans often hide for several days after molting to avoid confrontations with rivals or predators while their exoskeleton hardens to normal strength. Calcium is very important to chitin formation in crustaceans, and is provided by Florin Delta GH+, NeoTiger KH+/GH+, or Caridina GH+. To benefit crustaceans, simply use that product as directed on the label to maintain proper calcium content in the aquarium for plant health. Water with very low TDS (<150 ppm or ~3 dGH) and/or low carbonate hardness (alkalinity) inhibits the formation and hardening of chitin.

Health and longevity of all captive aquatic organisms, including crustaceans, depends upon proper feeding and maintaining water temperature and chemistry within required ranges. Florin-I will not elicit molting unless the resident crustaceans have the necessary nutrients provided by feeding and are in good overall health.

Caution: Keep out of reach of children. Not for human consumption.

More Information
UPC 810086017577
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