--- product_id: 47892513 title: "Fluval SEA Hydrometer" brand: "hagen" price: "€ 30.04" currency: EUR in_stock: true reviews_count: 13 category: "Hagen" url: https://www.desertcart.es/products/47892513-fluval-sea-hydrometer store_origin: ES region: Spain --- # Accurate saltwater readings Lightweight & compact design Precision glass build Fluval SEA Hydrometer **Brand:** hagen **Price:** € 30.04 **Availability:** ✅ In Stock ## Summary > 🌊 Keep your marine world perfectly balanced with Fluval SEA Hydrometer! ## Quick Answers - **What is this?** Fluval SEA Hydrometer by hagen - **How much does it cost?** € 30.04 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/47892513-fluval-sea-hydrometer) ## Best For - hagen enthusiasts ## Why This Product - Trusted hagen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Use:** Ideal for both indoor and outdoor marine tanks up to 35 liters. - • **Lightweight & Compact:** Easy to handle and mount without adding bulk to your aquarium setup. - • **Trusted Brand Quality:** Made by Fluval, a leader in aquatic care, ensuring premium performance at an affordable price. - • **Precision Glass Construction:** Durable, clear glass ensures reliable, long-lasting measurements. - • **Accurate Saltwater Monitoring:** Field-tested to match refractometer accuracy for perfect marine conditions. ## Overview The Fluval SEA Hydrometer is a precision glass instrument designed for accurate saltwater measurement in marine aquariums up to 35 liters. Lightweight and compact, it offers reliable, field-tested performance trusted by both beginners and experts. Made by Fluval, it combines quality materials with affordability to maintain optimal aquatic environments. ## Description Fluval has been providing quality aquatic products at value pricing for years. Whether you have a beginner setup or even up to advanced seasoned aquatic experts, Fluval provides everything you need for quality, healthy aquatic environments Review: Really good hydro meter - Very easy to use ...and tested it and it was same results as my refractometer. This hydrometer i just use it as a guide test. Always rinse it out after every test or you end up getting false results with salt build up on the plastic white arrow it get bits of gritty salt build up etc so always use then rinse.i dont leave mine in tank but you can if you want but i wouldn't recommend it Great bit of kit from fluval .. Review: works great - what more can i say. does exactly what its ment too. and its accurate. ## Features - Performance driven at affordable prices - Made in the USA with quality materials - Field tested to ensure nothing but the best for your pet - Item Package Weight: 0.185 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007MM0YUU | | Best Sellers Rank | 74,003 in Pet Supplies ( See Top 100 in Pet Supplies ) 9 in Aquarium Hydrometers | | Brand | Hagen | | Brand Name | Hagen | | Colour | Clear | | Country Of Origin | China | | Customer Reviews | 3.8 out of 5 stars 819 Reviews | | Global Trade Identification Number | 00015561143561 | | Included Components | Mounting Accessory | | Item Dimensions L x W x H | 25L x 140W x 201H millimetres | | Item Shape | Rectangular | | Item Weight | 23 Grams | | Item weight | 23 Grams | | Manufacturer | Fluval Sea | | Manufacturer Part Number | 14356 | | Material | Glass | | Material Type | Glass | | Model Number | 14356 | | Pet Type | Fish | | Product Style | Compact | | Product dimensions | 25L x 140W x 201H millimetres | | Set Name | Marine | | Special Features | Lightweight | | Special feature | Lightweight | | Specific Uses For Product | Both indoor and outdoor | | Tank Volume | 35 Litres | | Tank volume | 35 Litres | | Target Species | Fish | | UPC | 015561143561 | | Unit Count | 1 count | | Vivarium Type | Aquarium | ## Product Details - **Brand:** Hagen - **Colour:** Clear - **Item weight:** 23 Grams - **Material:** Glass - **Product dimensions:** 25L x 140W x 201H millimetres - **Shape:** Rectangular - **Special feature:** Lightweight - **Specific uses for product:** Both indoor and outdoor - **Style:** Compact - **Tank volume:** 35 Litres ## Images ![Fluval SEA Hydrometer - Image 1](https://m.media-amazon.com/images/I/81Zk0yoggSL.jpg) ![Fluval SEA Hydrometer - Image 2](https://m.media-amazon.com/images/I/61M8zDiiIBL.jpg) ![Fluval SEA Hydrometer - Image 3](https://m.media-amazon.com/images/I/41h+BPNIRtL.jpg) ![Fluval SEA Hydrometer - Image 4](https://m.media-amazon.com/images/I/41jolZz6lLL.jpg) ![Fluval SEA Hydrometer - Image 5](https://m.media-amazon.com/images/I/51kUcWOxu8L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Really good hydro meter *by C***E on 14 February 2021* Very easy to use ...and tested it and it was same results as my refractometer. This hydrometer i just use it as a guide test. Always rinse it out after every test or you end up getting false results with salt build up on the plastic white arrow it get bits of gritty salt build up etc so always use then rinse.i dont leave mine in tank but you can if you want but i wouldn't recommend it Great bit of kit from fluval .. ### ⭐⭐⭐⭐⭐ works great *by P***L on 20 March 2022* what more can i say. does exactly what its ment too. and its accurate. ### ⭐ Doesn't seem to work *by A***R on 26 November 2023* It either shows the lowest or the highest measure and is completely inaccurate. Useless...and worse still so inaccurate that it could seriously damage the contents of your aquarium. ## Frequently Bought Together - Fluval Sea Hydrometer for Aquarium, Medium - Instant Ocean Sea Salt 50 Gallons, For Marine Aquariums, Fast Dissolving - API SALTWATER MASTER TEST KIT 550-Test Saltwater Aquarium Water Test Kit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.es/products/47892513-fluval-sea-hydrometer](https://www.desertcart.es/products/47892513-fluval-sea-hydrometer) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-07-07*