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Aquarium Pharmaceuticals (API)

API GH & KH Test Kit: General & Carbonate Hardness for Ponds

API GH & KH Test Kit: General & Carbonate Hardness for Ponds

Regular price $13.99
Regular price Sale price $13.99
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pH tells you where your pond is right now. KH tells you whether it is about to move. Koi ponds consume carbonate hardness continuously through nitrification, respiration and rainfall, and once KH runs out there is nothing anchoring pH at all. It then swings hard overnight, and fish that looked fine at lunchtime are in trouble by morning. Testing pH without testing KH is watching the symptom and ignoring the cause.

This kit covers both hardness measurements: general hardness (GH) in tap and pond water, and carbonate hardness (KH) in tap, fresh or salt water. If you already own a master test kit, KH is the one parameter it does not include, and the one most likely to catch you out. Test monthly, more often after heavy rain or a large water change, and buffer before KH reaches zero rather than after.

  • Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution and 2 test tubes with cap
  • Helps monitor water quality and prevent invisible water problems that can be harmful to fish and plants and cause fish loss
  • Accurately measures GH & KH in freshwater aquariums
  • Water hardness is a measure of the dissolved mineral content of water and should match fish natural habitat to prevent fish stress and keep them healthy
  • Use for weekly monitoring and when water or fish problems appear

⭐ 4.8 rating from 200+ verified buyers

Refund Policy

Live Fish:

  • Due to the delicate nature of our fish, we cannot accept returns. However, we are committed to ensuring you receive your fish alive.
  • Please ensure you are present during delivery to accept and sign for your fish.
  • If, unfortunately, your fish arrives deceased, notify us within one hour of delivery. Send a digital photo as proof to champkoi@champkoi.com, and we'll replace it with another of equal value.

Non-Returnable Items:

  • Chemicals, medications, water conditioners, and pond liners cannot be returned due to safety and quality reasons.

General Merchandise Returns:

  • If you're not completely satisfied, you may return items within 14 days, subject to a 15% restocking fee. Note: shipping and handling costs are non-refundable.
  • Items on sale or special deals, as well as special order items, cannot be returned.
  • To ensure a smooth return:
    • Items must be in unused, resellable condition.
    • Original packaging, warranty books, manuals, parts, and accessories must be intact.
    • For shipping, please encase the original packaging in another carton to prevent damage.

Return Process:

  • Prior to returning any items, please obtain a Return Goods Authorization number (RGA) by contacting us. Have your invoice ready for reference.
  • After inspection, we'll confirm acceptance of the returned merchandise.

Return Shipping:

  • Customers cover return freight costs. If we made an error or the item is defective, we'll handle the freight charges.
  • For orders with free shipping, the actual outgoing freight charge will be borne by the customer.

We're always here to help. Please reach out if you have any questions or concerns!

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What Koi Keepers Say After Delivery

4.8 out of 5 stars on Google
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Based on 211 reviews
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