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Your cart is empty.API WATER SOFTENER PILLOW Aquarium Canister Filter Filtration Pouch is a chemical filtration media that reduces general hardness found in tap water for aquarium use. WATER SOFTENER PILLOW works to lower calcium and magnesium levels, and also removes heavy metals and reduces white, crusty mineral deposits on aquarium surfaces. WATER SOFTENER PILLOW can be reused after it is recharged in a salt solution. Use when starting or maintaining an aquarium when testing indicates water hardness above the desired level. Use according to directions on product packaging. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.
Mya
2025-09-04 18:49:13
Only took an hour for my 5 gallon to test from very hard to very soft. Really great fix. I don’t think anything else would’ve worked for me. Make sure to check and test water after just an hour for smaller tanks, and remove
Krystle
2025-08-30 15:13:35
We have rather hard water, and this has been a lifesave. It lowered the water hardness in my tank and my aquatic friends have thrive since we’ve added this to our filters
Elizabeth Ramirez
2025-08-21 13:44:55
Discovered I had very hard water in my 75gal aquarium from a rock that was leaching minerals. Removed the rock, and did a partial water change but it wasn't enough to bring the water into ideal conditions. Used this to successfully bring down the hardness. I recharged it for reuse per the instructions but it didn't appear to have any further effectiveness beyond the initial use. Highly recommended for harness reduction, and cheaper than in store.
Kaila
2025-08-13 11:19:46
U bought this around 2 months ago, and it works well
Mikayla B.
2025-08-11 11:10:44
it does what it’s supposed to however one packet only treats 20 gallons so if you have a large tank, you need to buy multiple of these.
Florida Man
2025-08-08 12:34:41
I had hard water in my fish tank that I could not get rid, so I looked on Amazon and found this. Worked quickly and the instructions were great. When it was ready to recharge, I soaked it in water with added aquarium salt. (do not use house salt.) and put it back into the tank. Now I have no issues. Can be used many times over.
Alonzo
2025-07-25 20:36:07
I used these water-softening pillows to lower the GH of my tank that I have accidentally raised from 10dGH to 16dGH, instead of 13dGH, using Seachem Equilibrium to add more magnesium for my plants (intense magnesium deficiency).I bought two bags for my 55 gallon tank, and the pillows brought down the GH to 13dGH within 13 hours. However, as soon I remove those pillows yesterday and tested the water again today, the GH shot back up to 16dGH. I tested the water several times today, but it read 16 every time.The product didn’t work as intended, and I already threw them out, so no refund for me. Waste of time.
Customer
2025-07-08 18:11:36
I love this product. I have a 5-gallon aquarium that I used it on. I had it on there for about 2.5 hours. I checked it and it went from hard water to very soft water in that short of a time. It went too soft, so I had to add spring water in to try and balance it. It went too soft for betta fish. It works great and fast!!
Cliente de
2025-06-16 12:22:25
Bajo la dureza de la noche a la mañana literal. Pero únicamente es un saco
Akash Chauhan
2025-02-02 13:50:46
It seems like it didn't work for me....... didnt reduce my water hardness.... in spite use as directed
Ziad
2024-12-25 18:27:38
it's useless, in fact my TDS Increased !!!
Mark
2024-12-11 18:32:34
Got great results and the desired GH, The fact it is rechargeable makes it excellent value 🌟🌟🌟🌟🌟
Dillon
2024-11-14 12:33:50
Works great!
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