PhosGuard Phosphate and Silicate Remover, 100 ml

I use this in my reef aquarium in a media sock. Excellent results.

Bought this as was having trouble with fluffy algae and biofilm was significantly more than normal. So to help get the tank under control I purchased this. It's worked great and helped sort the rank and get back to normal. You don't need much at all

Been using this product for a year or two and found it to be effective. Just follow the instuctions on the container.....the correct dosing rate is smaller than you might think and certainly smaller than a lot of the videos on YouTube that show people using huge quantities of this stuff. The phosphate removal is rapid (just three days) after which the beads may be exhausted. The phosphate binds with the beads to offer a one way transference, meaning that if you left the beads in the sump or filter they wouldn't leach out phosphate back into the tank. I'd recommend buying some zipped mesh bags from the online seller of your choice to hold the beads in the sump. I have to say that I don't like using this stuff...but it's a necessary evil. Water changes, macro algae harvesting in the sump, mangrove plants growing in the tank, low livestock levels, not over feeding are all preferable to using chemical removal of phosphates, but sometimes we need a hand getting the water parameters back on track! I also find that corals shrink back significantly after I use this product and some become discoloured. I've noticed it time after time. It defintitely upsets certain inhabitants of my tank. As the product becomes exhausted they all resume their usual selves. I want to love Phosguard but some of my corals hate it. Feed less, stock less, more water changes....my mantra! But..this stuff works!

Had an issue with brown algae, no matter how much I cleaned and did water changes it just came straight back (it would be back on the glass the next day). Discovered from research this was due to silicate which this product removes. Had this in the filter for a week now and since cleaning (deep cleaned day 2) the brown algae hasn’t returned.

Very pleased with this, like all Seachem products you get what you pay for. After testing phosphate with an API Phosphate test kit it was off the scale, I tried Phosguard and after 2 weeks it was completely and safely absorbed. The test kit revealed normal levels in my 100l Malawi aquarium. Removed and replaced with a smaller bag to keep on top of it following normal water changes.

Been using it for about 7weeks and as instructed -= small amount frequently i.e. every 7 days. The pellets do turn from white to a light brown over a week, I think it helps but it's not as good as the advertising suggests. Having goldfish means live plants don't last, but in their absence, brown diatoms algae arose. Deep clean. glass scraping, and adding marimo moss balls as a substitute for live plants seem to be getting it under control, but do not necessarily expect fast results if you go for this option. Patience is very much needed.

I have tried many products, but this one actually works. It made a massive difference.

Bought this and added to a Fluval 406 for the removal of silicates which seem to feature quite heavily in my tap water. This done the job quickly and cleanly at a good price. The media is small so adding to a teabag could be a cleaner way to go. I poured into one of the filter media box sections and though a couple of bits escaped the box, they didn't make it any further than the filter pads so no harm done.

Buen producto

Seachem PhosGuard is a very good product to remove brown algae, diatoms, and other types of algae you don't want in your aquarium. Highly recommended.

I’m absolutely thrilled with Seachem PhosGuard and here’s why I’m giving it a 5-star review: 1. Excellent at Removing Phosphates: I’ve been dealing with high phosphate levels in my aquarium for a while, and Seachem PhosGuard has been a game-changer. After using it for just a few days, I noticed a significant reduction in algae growth, which was one of my main concerns. The product works efficiently at removing phosphates, improving water clarity, and maintaining the overall health of my tank. 2. Easy to Use: The 100 mL bag is convenient and easy to place in the filter. It’s designed to be used in a filter bag, which makes it super simple to add to your system. I also appreciate that it’s not messy and doesn’t leave any residue in the tank once it’s in place. 3. Safe for Aquatic Life: I love that Seachem PhosGuard is safe for my fish and plants. I’ve had no negative effects on the aquatic life in my tank after using it, which is a huge relief. It’s one of the reasons I trust Seachem products—they’ve always proven to be gentle on sensitive ecosystems. 4. Fast-Acting Results: The results were quick! My water cleared up in just a few days after starting to use it. You can see the improvement in the clarity of the water and a reduction in algae build-up. If you have any phosphate-related issues in your tank, this product will definitely help. 5. Long-Lasting: While the bag is small, it goes a long way! The 100 mL lasts quite a while, and you can reuse it for multiple cycles. This makes it a cost-effective solution for keeping phosphate levels in check. 6. Great for Freshwater and Saltwater Tanks: I’ve used this in both my freshwater and saltwater aquariums with great success. Whether you’re managing a fish-only tank or a reef tank, this product works across the board. 7. Reliable Brand: Seachem is a brand I’ve trusted for years, and this product lived up to the high standards I’ve come to expect from them. Their products are always effective and reliable, and PhosGuard is no exception. Final Thoughts: If you’re battling high phosphate levels in your aquarium, Seachem PhosGuard is a must-have. It’s effective, easy to use, and safe for both fish and plants. The results are noticeable quickly, and I’ll definitely be keeping this product stocked in my aquarium maintenance supplies! 🌟 Highly recommend for anyone needing to reduce phosphates and improve water quality in their tank!

Best price in large quantity

This stuff is fantastic. Turns out that our city water is high in silica and also has some phosphates in it. This was building up in our fish tanks and causing brown algae. We started putting this PhosGuard in the filters and within 2 weeks both silica and phosphates were at zero and the brown algae has stopped growing. I just add 1/4 cup of this inside the filters along with the charcoal. Now that we know the water was the cause, we will use filtered water from now on. I also purchased test kits for both phosphates and silica so I could watch the levels drop and test my house water. Now that the levels are to zero, I may not need to use this anymore since we will use filtered water to prevent the silica and phosphates from getting in the fish tank to begin with. But this stuff did the trick! If you have brown algae, then you need this to remove these things the algae feeds off of. As for the filter usage: our pump on our 55Gal tank has two large rectangular filters that the water flows thru like a waterfall. With those filters it is easy to add the PhosGuard. And we replace each of the filters once a week, on different days. We replace the left filter on Wednesdays and the replace the right filter on Saturdays.