Seachem Laboratories Reef Nitrogen Supplement 100 mL, 3.4 oz

Tending a reef tank is a labor of love, and nitrogen is one of the quiet variables that influences how your corals and macroalgae look and grow. Seachem Laboratories Reef Nitrogen is a concentrated supplement made to help you manage that nitrogen in your reef aquarium. This is the compact 100 mL (3.4 oz) bottle, a great starting size for smaller reefs, newer reef keepers, or anyone who wants to try a focused nitrogen supplement without committing to a larger volume.

• Targets nitrogen as part of coral nutrition, letting you address one element of your reef chemistry on purpose.
• Seachem notes that supplementing inorganic nitrogen provides a targeted means of increasing nitrogen without also adding phosphate.
• The brand explains that maintaining nitrogen levels alongside phosphorous levels matters for corals and macroalgae.
• According to Seachem, balanced nitrogen supports optimal growth and coloration of corals and macroalgae.
• Concentrated formula keeps dosing focused, which is handy in a smaller bottle.
• The 100 mL (3.4 oz) size is ideal for compact tanks or trying it out before sizing up.
• Designed as an aquarium water treatment that fits your established reef-care routine.
• Slots in as part of a deliberate coral nutrition plan for your display.
• Single bottle from Seachem Laboratories, ready for your shelf.
• A friendly entry point for hobbyists who like to tune one variable at a time.

Even a small reef is a whole little ecosystem, and gentle, measured care is what keeps it healthy. Always follow the label and dose to your own tank's test results, since every reef finds its own balance. Pairing Reef Nitrogen with regular water testing helps you see how your corals and macroalgae respond so you can adjust thoughtfully. For the reef keeper who wants a modest, easy-to-manage way to work on nitrogen, this 100 mL bottle is a smart, low-commitment choice. Give the corals and macroalgae you care for the steady attention they deserve, one careful dose at a time.