{"product_id":"aquarium-co-op-crushed-coral","title":"Aquarium Co-Op Crushed Coral","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:14c6993c-28fc-4de8-904b-1b35a54e8b67-1\" data-is-intersecting=\"true\"\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:14c6993c-28fc-4de8-904b-1b35a54e8b67-1\" data-turn-id-container=\"request-WEB:14c6993c-28fc-4de8-904b-1b35a54e8b67-1\" data-testid=\"conversation-turn-4\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"e70917d3-dc4f-43e9-aa7d-d50c8330cfd6\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"0\" data-end=\"111\"\u003e\n\u003cli data-section-id=\"1jxpw1u\" data-start=\"0\" data-end=\"32\"\u003eHelps raise and stabilize pH\u003c\/li\u003e\n\u003cli data-section-id=\"dfhmx4\" data-start=\"33\" data-end=\"69\"\u003eIncreases KH to reduce pH swings\u003c\/li\u003e\n\u003cli data-section-id=\"6kfkn1\" data-start=\"70\" data-end=\"111\"\u003eAdds beneficial hardness to the water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"113\" data-end=\"347\"\u003eCrushed coral is a simple, natural way to increase pH, KH, and overall water hardness in aquariums with soft or acidic water. It’s especially useful for keeping fish, shrimp, and snails that thrive in harder, more alkaline conditions.\u003c\/p\u003e\n\u003cp data-start=\"349\" data-end=\"706\"\u003eAs the coral slowly dissolves, it releases minerals into the water. Lower pH levels cause the coral to dissolve more quickly, while higher pH levels naturally slow the process down. In addition to slightly increasing GH (general hardness), crushed coral significantly raises KH (carbonate hardness), which helps stabilize pH and prevent sudden fluctuations.\u003c\/p\u003e\n\u003ch3 data-section-id=\"ovi83c\" data-start=\"708\" data-end=\"739\"\u003eDirections \u0026amp; Specifications\u003c\/h3\u003e\n\u003cp data-start=\"740\" data-end=\"1044\"\u003eBecause crushed coral is a natural material, it may contain some dust when first opened. To avoid cloudy water, rinse it thoroughly before use. Place small amounts into a fish net or strainer and rinse under running water until the water runs mostly clear. Once rinsed, it’s ready to add to the aquarium.\u003c\/p\u003e\n\u003cp data-start=\"1046\" data-end=\"1302\"\u003eWhen mixed into gravel or substrate, a common recommendation is about 1 pound of crushed coral per 10 gallons of water. Depending on your tap water’s pH, the coral will gradually dissolve and may need replacement every 1–2 years when used in the substrate.\u003c\/p\u003e\n\u003cp data-start=\"1304\" data-end=\"1481\"\u003eTo keep track of water chemistry, regularly test your pH and KH using aquarium test strips or liquid test kits. This will help determine when additional crushed coral is needed.\u003c\/p\u003e\n\u003cp data-start=\"1483\" data-end=\"1683\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf used inside a filter, crushed coral tends to dissolve faster due to increased water flow. Smaller amounts are usually sufficient in this setup, but the media often needs replacing every 1–3 months.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"CK Fishworld","offers":[{"title":"Default Title","offer_id":48631577215191,"sku":null,"price":5.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3308\/0791\/files\/Screenshot2026-05-16164159.png?v=1778974953","url":"https:\/\/ckfishworld.com\/products\/aquarium-co-op-crushed-coral","provider":"CK Fishworld","version":"1.0","type":"link"}