--- product_id: 48415448 title: "Seachem Prime Water Conditioner, 100 ml" brand: "seachem" price: "€ 15.22" currency: EUR in_stock: true reviews_count: 13 category: "Seachem" url: https://www.desertcart.be/products/48415448-seachem-prime-water-conditioner-100-ml store_origin: BE region: Belgium --- # Safe for fresh & saltwater tanks 1 cap treats 200L water Detoxifies ammonia, nitrite & nitrate Seachem Prime Water Conditioner, 100 ml **Brand:** seachem **Price:** € 15.22 **Availability:** ✅ In Stock ## Summary > 💧 Transform your tank water like a pro—because your aquatic friends deserve the best! ## Quick Answers - **What is this?** Seachem Prime Water Conditioner, 100 ml by seachem - **How much does it cost?** € 15.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/48415448-seachem-prime-water-conditioner-100-ml) ## Best For - seachem enthusiasts ## Why This Product - Trusted seachem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Clean & Safe Dosing:** No residue, no smell, safe for all fish, invertebrates, and plants - • **Powerful Detox Action:** Neutralizes chlorine, chloramine, ammonia & nitrite instantly - • **Versatile Aquarium Use:** Perfect for freshwater and marine environments alike - • **Supports Biofilter Health:** Keeps your tank’s ecosystem balanced and thriving - • **Ultra-Concentrated Formula:** Small dose, massive coverage—one cap conditions 200L ## Overview Seachem Prime Water Conditioner is a highly concentrated liquid treatment designed to instantly remove chlorine, chloramine, and detoxify harmful ammonia and nitrite in both freshwater and saltwater aquariums. With just one dosing cap treating up to 200 liters, it supports biofilter health and ensures a safe, clean environment for all aquatic species. Trusted by over 37,000 users with a 4.8-star rating, it’s the go-to solution for emergency spikes, routine maintenance, and new tank setups. ## Description Product Description Seachem Prime 100Ml Directions Use 1 dosing cap to 200 litres of aquarium water. Seachem Prime can be added directly to the aquarium, also after water changes. With direct aquarium addition, the base dosage is based on the aquarium volume. A sulphur smell is normal. Conspicuously high chloramine concentrations can be safely used double dosage. Used to detoxify nitrite in an emergency up to five times normal Box Contains water treatment Review: Strong, reliable, and multi-use—solid water treatment for chlorine, ammonia, and nitrite control. - This bottle’s built for serious water prep—removes chlorine, chloramine, detoxifies ammonia and nitrite, and supports biofilter health. Geared toward freshwater and marine tanks, whether you’re doing full water changes or topping up. One capful treats 200L, so the 500ml bottle lasts ages. Works well in van stash, fish rooms, or home aquariums where water quality needs to stay tight. No smell, no clouding, and safe for all species. Ideal for new setups, emergency spikes, or routine maintenance. Can be used alongside meds and other treatments without clashing. Best dosed with a syringe or pipette for accuracy—cap measurements are rough. 👍 Pros ✅ Highly concentrated—small dose, big coverage ✅ Detoxifies ammonia and nitrite—supports cycling ✅ Safe for all fish, inverts, and plants ✅ No smell or residue—clean dosing ✅ Long shelf life—stays potent 👎 Cons ❌ Cap dosing is vague—use a syringe for precision ❌ No colour indicator—can’t see it in water ❌ Not a full-on bacteria booster—use with bio support if needed Review: Perfect! - worth the price and it lasts ages ## Features - Complete and concentrated conditioner for both fresh and saltwater - Removes chlorine, chloramine - Detoxifies ammonia, nitrite, and nitrate - Model number: 020040 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000255PFI | | Allergen Information | Gluten Free | | Best Sellers Rank | 582 in Pet Supplies ( See Top 100 in Pet Supplies ) 11 in Aquarium Water Treatments | | Brand | Seachem | | Brand Name | Seachem | | Country Of Origin | USA | | Customer Reviews | 4.8 out of 5 stars 37,232 Reviews | | Global Trade Identification Number | 00000116043502 | | Included Components | water conditioner | | Item Form | Liquid | | Item Type Name | aquarium water conditioner | | Item Weight | 3.5 Ounces | | Item form | Liquid | | Item weight | 3.5 Ounces | | Liquid Volume | 100 Millilitres | | Liquid volume | 100 Millilitres | | Manufacturer | Seachem | | Manufacturer Part Number | 075222 | | Model Number | 67104350 | | Number of Packs | 1 | | Pet Type | Fish | | Product Warranty | 2 year | | Target Species | Fish | | UPC | 703062507042 000116043502 | | Unit Count | 100.0 millilitre | | Unit count | 100.0 millilitre | ## Product Details - **Brand:** Seachem - **Item form:** Liquid - **Item weight:** 3.5 Ounces - **Liquid volume:** 100 Millilitres - **Number of Packs:** 1 ## Images ![Seachem Prime Water Conditioner, 100 ml - Image 1](https://m.media-amazon.com/images/I/61ZKj2Dnv6L.jpg) ![Seachem Prime Water Conditioner, 100 ml - Image 2](https://m.media-amazon.com/images/I/81vL-MMNcDL.jpg) ![Seachem Prime Water Conditioner, 100 ml - Image 3](https://m.media-amazon.com/images/I/81V03WVV28L.jpg) ![Seachem Prime Water Conditioner, 100 ml - Image 4](https://m.media-amazon.com/images/I/818XhtmBS-L.jpg) ![Seachem Prime Water Conditioner, 100 ml - Image 5](https://m.media-amazon.com/images/I/91ElptHhL2L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What dosage would i need for a 45 litre tank please** A: I prepare my water in 10 litre buckets, I put 5 drops in each bucket of water before adding to the tank. So for 45 litres of fresh water you would need 23 drops. The bottle comes with a flip lid and a small hole so it is very easy to dispense one drop at a time. It doesn’t seem a lot but it works, the best you can buy. I never use anything else. Hope this helps. **Q: I’ve been trying to cycle a new sponge filter 60 litre freshwater tank and nitrites level is high. Can this product help reduce nitrite levels?** A: Yes it will, but reducing nitrates isn't it's main feature, do small daily or every 2 days water changes, the levels have to spike before they drop,add some fish food even if the tank is empty and also check the tap water levels. **Q: Very expensive its only£6 80 in my local pet shop have you anything cheaper** A: Prime is very concentrated. You only need 10ml to treat 400 Litres! most other products require about 10ml to treat 40 L. So it lasts about 10 times as long as them. If its double the price... that's still 5 times better value. Prime also detoxifies ammonia and nitrite. **Q: do you need to use this every 48 hours? or just the once then every week when doing a 20% water change?** A: If you want to use this specifically to detoxify high levels of nitrite, nitrate etc, then you need to dose every 48 hours. If you wish to use it to condition water change water, then you only need to add it to the water that you're putting into the aquarium. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Strong, reliable, and multi-use—solid water treatment for chlorine, ammonia, and nitrite control. *by G***E on 20 September 2025* This bottle’s built for serious water prep—removes chlorine, chloramine, detoxifies ammonia and nitrite, and supports biofilter health. Geared toward freshwater and marine tanks, whether you’re doing full water changes or topping up. One capful treats 200L, so the 500ml bottle lasts ages. Works well in van stash, fish rooms, or home aquariums where water quality needs to stay tight. No smell, no clouding, and safe for all species. Ideal for new setups, emergency spikes, or routine maintenance. Can be used alongside meds and other treatments without clashing. Best dosed with a syringe or pipette for accuracy—cap measurements are rough. 👍 Pros ✅ Highly concentrated—small dose, big coverage ✅ Detoxifies ammonia and nitrite—supports cycling ✅ Safe for all fish, inverts, and plants ✅ No smell or residue—clean dosing ✅ Long shelf life—stays potent 👎 Cons ❌ Cap dosing is vague—use a syringe for precision ❌ No colour indicator—can’t see it in water ❌ Not a full-on bacteria booster—use with bio support if needed ### ⭐⭐⭐⭐⭐ Perfect! *by C***7 on 19 May 2026* worth the price and it lasts ages ### ⭐⭐⭐⭐⭐ Utter Fishy Lifesaver! *by H***R on 8 April 2021* I discovered yesterday, much to my horror, that my nitrite levels had spiked to around 4 - 5ppm - this is a toxic level for fish, my nitrate levels were up at around 50 (again not good news). I was gutted as I love the fish. I think the fault was not cycling the tank properly before I put my fish in and a few days after I bought my fish I changed my old and very used filter sponge for a brand new one - convinced I was doing my little fishies a lot of good! Yesterday afternoon, upon reading the results of my water test, I immediately did a 50 per cent water change and ordered this Seachem Prime as it had many reviews saying it immediately got rid of nitrites, nitrates and ammonia etc This morning when I woke up I did another 25 per cent water change and an hour later tested my water - I had managed to get my nitrite levels down to roughly 2ppm. This is still no good, they MUST read 0 or your fish are in danger. The Seachem Prime arrived today (less than 24 hours after ordering) and I immediately put 3ml into my 60L tank, which is 3x the stated dose but I had a nitrite emergency and felt happy all would be well. I read my water levels an hour later and the nitrite readings are now roughly 0 - 0.5. It has clearly had an immediate effect on these levels and probably saved my little fish. I also have 3 minuscule little fry in the tank and I am hoping it has saved their little lives as well. The nitrate levels are now at around 20 ish which is perfectly safe for fish. I am planning to put around 1ml of Prime into my water every 24 hours now, and do a 25 per cent water change twice a week until I think my tank has cycled fully. I will then reduce the Prime to once every 48 hours and continue to test, then once every 3 to 4 days and test to ensure there are no spikes and that my tank is cycled! I am so grateful for this product, I did not sleep a wink last night desperate to sort this problem out! Just to note, Seachem Prime can be used as a water conditioner by itself and it makes tap water safe for fish. However because this product had not arrived when I did my water changes I used API Stress Coat Plus in my new water which also makes tap water safe for fish as it removes chlorines and chloramines etc The Prime can be used in conjunction with other products, it will not harm the fish. In future when I do water changes I will use Prime only as my water conditioner. I also use a Gravel Cleaner liquid which breaks down waste and slows the build up of green algea. I cannot recommend this product enough if you have a nitrite spike, it will save fishy lives! UPDATE: LESS THAN 5 DAYS AFTER STARTING WITH THIS PRODUCT NITRITE AND NITRATE LEVELS BOTH 0. This is a great product. I'll now only use it as a water conditioner with my weekly water change! ## Frequently Bought Together - Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 100 ml - API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored - Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums, 16.9 Fl Oz (Pack of 1) --- ## 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.be/products/48415448-seachem-prime-water-conditioner-100-ml](https://www.desertcart.be/products/48415448-seachem-prime-water-conditioner-100-ml) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-06*