{"product_id":"kolar-labs-crystal-cal-activated-carbon-5-gallon-for-aquariums-and-fish-tanks","title":"Kolar Labs Crystal Cal Activated Carbon – 5 Gallon for Aquariums and Fish Tanks","description":"\u003ch2\u003eCrystal Cal Activated Carbon for Aquariums\u003c\/h2\u003e\n\u003cp\u003eKolar Labs Crystal Cal Activated Carbon comes in a bulk 5-gallon drum, delivering 15 lbs (6.8 kg) of premium carbon for aquarium use. This bulk option helps ensure you have steady filtration media on hand while maintaining a clean, clear tank aesthetic.\u003c\/p\u003e\n\u003ch3\u003eWhy choose Crystal Cal?\u003c\/h3\u003e\n\u003cp\u003eEngineered for aquarium filtration, Crystal Cal features a laboratory-grade activated carbon with an optimized pore structure. The large granules promote smooth flow through filter media bags, cartridges, or filter housings, reducing the chance of clogging and supporting consistent performance across canister, in-tank, reactor, and hanging filters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVisible improvements in water clarity and color over time, with many aquariums showing clearer water within 24 hours.\u003c\/li\u003e\n  \u003cli\u003eLower odor presence and tint in tanks, helping maintain a more natural appearance of water and decor.\u003c\/li\u003e\n  \u003cli\u003eFCC-grade quality and safe handling as a bulk product designed for hobbyists and professionals alike.\u003c\/li\u003e\n  \u003cli\u003eFlexible compatibility with multiple filter configurations, including reactors, canisters, and media bags.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse 1 cup per 50 gallons (or 1 tablespoon per 3 gallons) for initial setup or replacement.\u003c\/li\u003e\n  \u003cli\u003eRinse briefly before use to remove loose dust, then add to your preferred filtration path.\u003c\/li\u003e\n  \u003cli\u003eChange every 2–4 weeks to maintain performance, adjusting based on tank conditions and bioload.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned for bulk storage and reliable filtration, Crystal Cal supports both hobbyists and professionals who maintain freshwater aquariums with a need for consistent, practical filtration media. While results can vary with tank size, bioload, and feeding, many users notice a perceptible improvement in water quality in the days following installation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is Crystal Cal Activated Carbon best for in aquariums?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Crystal Cal helps remove colors, odors, and cloudy water; use 1 cup per 50 gallons and replace every 2–4 weeks; suitable for canister, in-tank, reactor, and hanging filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Crystal Cal activated carbon safe for all aquarium filters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s designed for aquarium use and works across canister, in-tank, reactor, and hanging filters; rinse briefly before first use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Kolar Labs","offers":[{"title":"Default Title","offer_id":53553825579337,"sku":"B06WD8RQ5F","price":157.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/1781\/9465\/files\/kolar-labs-crystal-cal-activated-carbon-5gal-drum.jpg?v=1766317406","url":"https:\/\/petvita.co.uk\/products\/kolar-labs-crystal-cal-activated-carbon-5-gallon-for-aquariums-and-fish-tanks","provider":"Petvita","version":"1.0","type":"link"}