Seachem Prime Water Conditioner, 250 ml

Great for fish keeping, halves the use of other brands and keeps the water perfect, I only use this one now and it's a great price too

I've been using Seachem Prime Water Conditioner for years. One of the things I appreciate most about Seachem Prime is that it's very concentrated. I only need to use a small amount of the conditioner to treat my entire tank, which means that a single bottle lasts for a long time. This is particularly important for me, as I have a large tank and was previously using a less concentrated water conditioner that required me to use more of the product. Another great thing about Seachem Prime is that it's very easy to use. I simply add the recommended amount of conditioner to my tank each time I do a water change, and it does the rest of the work. Seachem Prime also has the added benefit of not affecting the pH level of my tank. This is particularly important for me, as I have a delicate ecosystem in my tank that requires a consistent pH level. I've found that some other water conditioners can cause fluctuations in pH levels, which can be harmful to my fish and plants. With Seachem Prime, I don't have to worry about this issue. Overall, I would definitely recommend Seachem Prime Water Conditioner to any fish owner looking for an effective and concentrated water conditioner. It does a great job of detoxifying tap water and keeping my fish healthy, without affecting the pH level of my tank. Plus, the concentrated formula means that a single bottle will last for a long time, making it a great value for the price.

Really pleased with this water conditioner. It’s a useful product to have when maintaining an aquarium and preparing water for changes. The concentrated formula means you only need a small amount, which is convenient. Easy to use and a product I’d happily purchase again. Definitely one I’d recommend to other fishkeepers.

My go to over all, great water conditioner that removes metals and chlorine, but also if you have an ammonia spikes this product binds the ammonia to safe untill you resolve the issue. As a fish keeper you need this product

Requires very little of this solution to treat a vast quality of water. The one thing I hate is the paper seal under the cap wasn't firmly glued to the cap, and I've had to carefully put it back each time I've used it. Otherwise, I highly recommend it.

This is an excellent product, and it works out more economical than some of the alternatives. Seachem do offer a good range of chemicals and additives for aquariums, and I've always found them very effective without being over-priced. You don't need to use very much of this at water changes, so a relatively small bottle lasts quite a while.

This stuff is fantastic and saved my fish when my cycle crashed due to toxic hoses I purchaed of here that were described as aquarium safe 😤 you can see my review of them if you click my name 👍 I dosed every day and also did so many water changes on my tank which is 550l over the course of 2 weeks I bet severn trent thought a pipe had burst 🤣 I had to do those extreme water changes because I have a fully stocked aquarium with big yoyos and bosmani rainbows plus a sailfin pleco so the ammonia and nitrite was building back up so quickly the filters couldn't build bacteria quick enough but eventually I woke up 1 day and noticed a bacterial bloom and its been ok since 🤞😁 I'll always keep a bottle of this on hand now its something every fish owner should have just incase!!

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

Prachtig om het purigen weer te reinigen

Super

The story starts with my old established tank being broken by relatives kid and it just broke glass on base and one side. i have large angels, peacock rainbows, corycats and bosemani ranibows. i decided to make a new tank instead of fixing the old one, due to the size issues i had to give it 3 days after siliconing it to let it dry out, by that time the bacteria in my filter might not have survived as there was no circulation in filter. i brought prime to cure my issue of new tank syndrome as it was going to be a fully stocked tank, thankfully i had my sponge filter working in bucket so it had the bacteria colony from my old tank. seachem prime did what it was suppose to do, it helped me set up a tank and i just lost 1 fish. Its costly but considering its a highly concentrated solution and you just need 7ml for 300L (my tank is actually 290L) it would last you a long time. if you use any chlorine remover, you can replace it with this. it also converts ammonia/nitrate. please do remember adding this is not the end all of your regular maintenance, you will still need to change the water depending on stocking level of your tank and tank size. i highly recommend this and in long run it turns out to be around same cost as any other item.

どうもありがとうございます

Good