{"product_id":"tetra-pond-block-4-count-algae-control-for-ornamental-ponds-treats-250-gal-block","title":"Tetra Pond Block 4-Count – Algae Control for Ornamental Ponds (Treats 250 gal\/block)","description":"\u003ch2\u003eKeep Pond Water Clear with Tetra Pond Block 4 Count\u003c\/h2\u003e\n\u003cp\u003eFor five decades, Tetra has blended reliability with simplicity for pond enthusiasts. The Tetra Pond Block 4 Count is designed to help manage algae growth in ornamental ponds and fountains, supporting clearer water and a more enjoyable viewing experience. This four-block pack is straightforward to use and aligns with a regular maintenance routine. Each block typically dissolves over about 30 days, releasing its active ingredients gradually to help maintain your pond’s balance. It is intended for containerized ponds and fountains only and should not be used where live plants are present.\u003c\/p\u003e\n\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eThe blocks release active ingredients as they dissolve, enabling coverage across a broad area of the water. Use one block for water volumes between 100 and 250 gallons. When the previous block has fully dissolved, replace it to sustain ongoing maintenance. Dissolution usually takes around 30 days, though factors like water temperature and flow can influence timing.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTreats up to 250 gallons per block, simplifying dosing for patios and ponds\u003c\/li\u003e\n  \u003cli\u003eDesigned for containerized ponds and fountains, not intended for non-ornamental ponds\u003c\/li\u003e\n  \u003cli\u003eSupports clearer water by helping manage visible algae growth\u003c\/li\u003e\n  \u003cli\u003eSimple, follow-on maintenance with a predictable replacement cycle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eApply one block for 100–250 gallon water volumes\u003c\/li\u003e\n  \u003cli\u003eReplace a block after it has fully dissolved to maintain continuity\u003c\/li\u003e\n  \u003cli\u003eExpect dissolution in about 30 days under typical conditions\u003c\/li\u003e\n  \u003cli\u003eAvoid use in ponds with live aquatic plants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e4 blocks included in the package\u003c\/li\u003e\n  \u003cli\u003eClear dosage guidance for containerized ponds and fountains\u003c\/li\u003e\n  \u003cli\u003eLow-effort maintenance designed for easy upkeep\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTips for best results\u003c\/h3\u003e\n\u003cp\u003eEnsure good water circulation to promote even distribution of the block’s effects. Pair with compatible TetraPond products for a broader maintenance plan. Regularly check your pond’s appearance and algae signs to determine when the next block should be added as part of routine care.\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 does Tetra Pond Block 4 Count do for my pond?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It helps manage algae growth in ornamental ponds by slowly dissolving in water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much water does one block treat and how long does it take to dissolve?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One block treats up to 250 gallons and typically dissolves in about 30 days.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Tetra","offers":[{"title":"Default Title","offer_id":48157228237044,"sku":"B0034CAYDO","price":16.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6652\/0820\/files\/tetra-pond-block-4-count-pack.jpg?v=1778296040","url":"https:\/\/www.cerapatiogarden.com\/products\/tetra-pond-block-4-count-algae-control-for-ornamental-ponds-treats-250-gal-block","provider":"Cera Garden","version":"1.0","type":"link"}