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Do not add this product directly to an\r\nestablished aquarium without first diluting in water as directed, and without\r\nfirst determining pH and alkalinity with an accurate meter or test kit. Read\r\nentire instructions before proceeding. Adjust alkalinity, pH, TDS, and\r\ntemperature of the water prior to adding it to an established aquarium. To\r\nincrease alkalinity in systems with higher pH requirements, the use of\r\nBrightwell Aquatics Rift Lake dKH is recommended.\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eIncreases alkalinity (a.k.a. carbonate hardness or buffering capacity) in freshwater tanks with a target pH of 7.8 or less\u003c\/li\u003e\r\n \u003cli\u003eImproves stability of pH\u003c\/li\u003e\r\n \u003cli\u003eSafe for use in all freshwater community and planted aquaria\u003c\/li\u003e\r\n \u003cli\u003eComposed of USP-grade ingredients\u003c\/li\u003e\r\n \u003cli\u003eContains no phosphate-based buffering agents\u003c\/li\u003e\r\n \u003c\/ul\u003e","published_at":"2026-04-04T20:48:26+11:00","created_at":"2026-04-04T18:22:02+11:00","vendor":"Brightwell Aquatics","type":"Aquarium Water Treatments","tags":["pets_selected_Mar2026"],"price":15000,"price_min":15000,"price_max":15000,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":45045284864200,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B00Y01L4AK","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Brightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 500-g","public_title":null,"options":["Default Title"],"price":15000,"weight":558,"compare_at_price":null,"inventory_management":"shopify","barcode":"810086014880","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/pawsplanetshop.com\/cdn\/shop\/files\/B00Y01L4AK.jpg?v=1775731847","\/\/pawsplanetshop.com\/cdn\/shop\/files\/81qQVunlnTL.jpg?v=1775287325"],"featured_image":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/B00Y01L4AK.jpg?v=1775731847","options":["Title"],"media":[{"alt":"Brightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 500-g - PawsPlanet Australia","id":30834745180360,"position":1,"preview_image":{"aspect_ratio":1.5,"height":1707,"width":2560,"src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/B00Y01L4AK.jpg?v=1775731847"},"aspect_ratio":1.5,"height":1707,"media_type":"image","src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/B00Y01L4AK.jpg?v=1775731847","width":2560},{"alt":"Brightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 500-g - PawsPlanet Australia","id":30834745213128,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/81qQVunlnTL.jpg?v=1775287325"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/81qQVunlnTL.jpg?v=1775287325","width":2560}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eBrightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 500-g\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eAlkalinity, as it pertains to aquarium husbandry, is essentially a means of\r\nquantifying the stability of pH; the greater the alkalinity measures, the less\r\nlikely pH is to change. Adjusting and maintaining alkalinity to a value or\r\nrange appropriate to the requirements of the organisms residing within an\r\naquarium is vital to their long-term care; consult a reputable reference\r\nsource citing these requirements prior to use of this or any other pH- or\r\nalkalinity-altering supplement. Do not add this product directly to an\r\nestablished aquarium without first diluting in water as directed, and without\r\nfirst determining pH and alkalinity with an accurate meter or test kit. Read\r\nentire instructions before proceeding. Adjust alkalinity, pH, TDS, and\r\ntemperature of the water prior to adding it to an established aquarium. To\r\nincrease alkalinity in systems with higher pH requirements, the use of\r\nBrightwell Aquatics Rift Lake dKH is recommended.\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eIncreases alkalinity (a.k.a. carbonate hardness or buffering capacity) in freshwater tanks with a target pH of 7.8 or less\u003c\/li\u003e\r\n \u003cli\u003eImproves stability of pH\u003c\/li\u003e\r\n \u003cli\u003eSafe for use in all freshwater community and planted aquaria\u003c\/li\u003e\r\n \u003cli\u003eComposed of USP-grade ingredients\u003c\/li\u003e\r\n \u003cli\u003eContains no phosphate-based buffering agents\u003c\/li\u003e\r\n \u003c\/ul\u003e"}

Brightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 500-g

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Brightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 500-g

Alkalinity, as it pertains to aquarium husbandry, is essentially a means of quantifying the stability of pH; the greater the alkalinity measures, the less likely pH is to change. Adjusting and maintaining alkalinity to a value or range appropriate to the requirements of the organisms residing within an aquarium is vital to their long-term care; consult a reputable reference source citing these requirements prior to use of this or any other pH- or alkalinity-altering supplement. Do not add this product directly to an established aquarium without first diluting in water as directed, and without first determining pH and alkalinity with an accurate meter or test kit. Read entire instructions before proceeding. Adjust alkalinity, pH, TDS, and temperature of the water prior to adding it to an established aquarium. To increase alkalinity in systems with higher pH requirements, the use of Brightwell Aquatics Rift Lake dKH is recommended.

Product Features

  • Increases alkalinity (a.k.a. carbonate hardness or buffering capacity) in freshwater tanks with a target pH of 7.8 or less
  • Improves stability of pH
  • Safe for use in all freshwater community and planted aquaria
  • Composed of USP-grade ingredients
  • Contains no phosphate-based buffering agents

Buy with confidence as this product comes with 18 months full local warranty in Australia & New Zealand (unless otherwise stated in the overview).

This product also comes with the benefits of the Warranty. For further details please read our Warranty Guidelines.

You can also purchase 3 Year Extended Care. If you are interested please see our Extended Care Information.