{"id":48412,"date":"2026-01-29T10:09:03","date_gmt":"2026-01-29T08:09:03","guid":{"rendered":"https:\/\/akvazoo.ee\/?post_type=product&#038;p=48412"},"modified":"2026-01-29T10:09:03","modified_gmt":"2026-01-29T08:09:03","slug":"sera-nitrite-test-no2","status":"publish","type":"product","link":"https:\/\/akvazoo.ee\/en\/product\/sera-nitrite-test-no2\/","title":{"rendered":"Sera nitrite-Test (NO2)"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p><strong>Nitrite (NO2) is among the most toxic substances for fish in aquariums.<\/strong> It can enrich in the water in case of insufficient biological filtration.<br \/>\nThe sera NO2-Test allows monitoring the nitrite level in fresh and marine water easily and reliably.<br \/>\nWe recommend using sera bio nitrivec (freshwater), sera marin bio reefclear (marine water) or sera pond bio nitrivec (pond) in case of slightly elevated nitrite levels. In case of severe nitrite problems, sera Nitrite-minus quickly provide help.<br \/>\n<strong>Sufficient for approx. 75 measurements<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-48413\" src=\"https:\/\/akvazoo.ee\/wp-content\/uploads\/2026\/01\/sera-no2-300x96.jpeg\" alt=\"\" width=\"300\" height=\"96\" srcset=\"https:\/\/akvazoo.ee\/wp-content\/uploads\/2026\/01\/sera-no2-300x96.jpeg 300w, https:\/\/akvazoo.ee\/wp-content\/uploads\/2026\/01\/sera-no2-1024x328.jpeg 1024w, https:\/\/akvazoo.ee\/wp-content\/uploads\/2026\/01\/sera-no2-600x192.jpeg 600w, https:\/\/akvazoo.ee\/wp-content\/uploads\/2026\/01\/sera-no2.jpeg 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/strong><\/p>\n","protected":false},"featured_media":48416,"template":"","meta":[],"product_brand":[],"product_cat":[194],"product_tag":[],"class_list":{"0":"post-48412","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-water-tests","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Sera nitrite-Test (NO2)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/akvazoo.ee\/en\/product\/sera-nitrite-test-no2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sera nitrite-Test (NO2)\" \/>\n<meta property=\"og:description\" content=\"Nitrite (NO2) is among the most toxic substances for fish in aquariums. It can enrich in the water in case of insufficient biological filtration. The sera NO2-Test allows monitoring the nitrite level in fresh and marine water easily and reliably. We recommend using sera bio nitrivec (freshwater), sera marin bio reefclear (marine water) or sera pond bio nitrivec (pond) in case of slightly elevated nitrite levels. In case of severe nitrite problems, sera Nitrite-minus quickly provide help. 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