Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 27 - Jul 2
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For Your Every Summer RSVP, with Code: SUMMER15
Description
sera GH/KH-plus 250 ml (275 g)SERA GH KHPLUS 250 ml (275 g) Water Hardener for Increasing GH and KH Simultaneously A dualaction mineral supplement that raises both General Hardness (GH) and Carbonate Hardness (KH) in aquariums. Ideal for hardening R O or soft tap water, providing essential calcium and magnesium while stabilizing pH. Specifications: Category: Aquarium Care Water Conditioning & Hardness Use: Freshwater Aquariums (Hardness Adjustment) Volume Weight: 250 ml (275 g)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 47 reviews
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Product Reviews
★★★★★ 5
Very good product
Style: 36 Sqft 80 mil
Easy to install, very sticky. Will buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Works well and doesn’t break the bank
Style: 36 Sqft 80 mil
Awesome value for low budget wound deadening. Used this under the floor mat on my international 4300 and there is a noticeable difference in sound inside the cab.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
It works
Style: 36 Sqft 80 mil
Great product
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Reviewed in the United States on May 9, 2026
★★★★★ 4
Good product
Style: 18 Sqft 80 mil
Good sound deadening for the money..
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Easy to install
Style: 18 Sqft 80 mil
Easy to work with, sticks well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
