Comments: I was very cautious about this unit, but this was a great, affordable buy. I have used this for over a year and it has produced great water, have not lost a fish since I started this hobby, I attribute it to starting with the right water and this filter delivers. I also think you have to start with good public water coupled with the API Tap Water Filter.

Comments: Easy to hook up to kitchen faucet. It is doing what promised - giving water I can feel good about putting in my fish tank

Comments: only makes 20 gallons per filter cartridge. If you have hard water this will not last long. Do your self a favor and get a RO/DI unit. You can replace 1 year worth of cartridges on a ro unit for the price of 1 filter for this

Comments: This tap water filter works. Living in a farming community sometimes the tap water has higher levels of chemicals. The filter removes them all as advertised. I save money by not having to go and buy DI water from the store. That being said, my water changes are small, usually 2 gallons every ten days. I am using Red Sea Coral Pro salt thar mixes nicely with the filtered water. I would invest in a bigger filtration system if my water changes were significant. Four stars only because the universal connector for the faucet doesn't quite fit, and the unit does leak a little. Overall, saving money and time, which are my two most valuable resources!
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<br />Setup: 29 gallon reef only tank

Comments: Not bad so far. It's a cheap and ideal investment. Only problem I have is that the "universal" fittings don't fit my kitchen faucet, so the bathroom is what I'm limited to. Could be I just have an odd ball faucet...

Comments: I had this filter for 3 years and used it for my weekly water changes in my 55 gallon reef aquarium and I never once had a issue ever it produces great quailty water for any aquarium including reef tanks. I did 5 gallon water changes with it, I did sell mine after I got rid of my tank but just bought it again for my 28 gallon JBJ nano cube LED tank because it is such a great product. Obvisely if you have a huge tank I wouldnt reccomend it but I used it for my 55 and worked great!

Comments: Tap water filter did everything as advertised. Produced very pure aquarium water and was extremley easy to use. Wish I had this product years ago when fighting over amounts of algae feeding nutrients from well water.

Comments: This product works as advertized and is easy to use and the cartridges are easy to change. My problem may be more of a comment on the water supply in north Texas. I get about 20 gal of DI water before the cartridge is exausted. This comes our to about $1.00 per gallon which is expensive.

Comments: I use this filter and it works great. 0 TDS output. Depending on the TDS of your tap water it can burn threw cartridges. But if you live in the desert like me, I just cant justify or afford (pay a lot for water here) the 4 to 1 waste ratio of an RO unit. So this fits the bill.

Comments: I have a 24 gallon reef tank. I live in a rural area and the closest pet store to me is about 40 miles. I had to drive every week to purchase RO/DI and salt water. I decided to purchase this to try it out. It works as stated in the description. I have filtered around 20 gallons of well water (in a farming area) and the water quality is, at least, equal to the pet store water. I have only started to see the filter change, so I estimate that I will get more than 50 gallons from a filter. Including the cost of gas, I have figured that I can save at least $60 per filter using this product over driving to the pet store. I tested the water after the first filtering and it was spot on perfect with no measurable impurities. It does take a while to filter the water (10 gallons/hour max) but it is worth the small nuisance of checking to make sure your container is not overflowing every so often for me. Sure beats lugging a 7 gallon container up two flights of stairs every week. I highly recommend this product, and I hope it works as well for you as it is for me.

Comments: I got around 75 gallons out of my first filter. excluding unit cost it would be around 20 cents a gallon(filter cost since unit cost is not that much and will even out quickly), so it's much cheaper then buying it from a store. I don't know the cost of using an RO/DI system, but it would take a long time to get the cost per gallon down to 20 cents. At about 10 gallons per hour it's not extremely slow either. For what it is and what it's built to do, it's an excellent product.

Comments: This is a very convenient and easy to use tap water filter. I was disappointed that the cartridge only served to filter about 15 gallons before needing replacement, however, but I suppose that reflects the quality of my tap water.

Comments: When i hear ppl saying they only got 60 or 100 gallons out of this i am completely baffled. I probably got at least 500 gallons out of one cartridge and it was replaced before it turned purple. I even use this filter for drinking water and it taste just as good as ro water. I think its just as effective as a RO unit. RO units probably get you 99.9% pure but this one has to get the water at least 98 % pure. I am 2000 feet above sea level and may be this is why i can get more out of one cartridge but in NJ i was still able to use on for an extended amount of time. I have never had a phospate or nitrate problem once in my aquarium. I hate how RO units only filter 35-100 gph. this one pushs 10-15 gallons per hour. great investment. try it

Comments: Water quality has always been an issue in all the places I have lived and this is why I haven't started a marine tank. I live in Southern California where they add a LOT of chemicals and minerals into our water. Never was a fan of buying water from the store and hauling it, so I just don't do it. I simply aged my water in the past for about a week with some conditioner. I thought this filter may be a good solution to better my water for my freshwater 50 gallon tank. I must admit, even after about a 30% water change, there was a noticable difference in water clarity, visibility, and even the colors of my fish were more vibrant! The product did just what it was supposed to and did a great job. Also VERY easy to use.... BUT after just 15 gallons, my filter was 2/3 of the way used. I may be able to squeeze out one more partial water change (5 - 10 gallons), but that's it. I understand I may have poor water, but shouldn't this have been taken into consideration when making a tap water filter that customers would buy to correct poor water conditions?? And replacement filters are $20 - $40!?!? Seems like AP didn't think this one all the way through. I relly like this filter a lot, but I'm going to be shopping for another brand. If I were able to get at least 50 - 60 gallons out of this, I would totally put up the money. This is way to expensive. Again, amazing product, but bad life span. :(

Comments: you cant beat the price can u? i couldnt buy one locally for cheaper. locally it cost almost twice as much. this is my second one and my only gripe is the faucet adapter is plastic instead of a ss metal. last adapter broke on my first model. manufacturer recommended replacing filter after cleaning around 50 gallons i used my first one for around 250-300 gallons with no problems at all.

Comments: Well I love this product. I got fed up traveling to the local fish store with my 5 gallon water bottle. So after a yr of doing this I finally decided to purchase this item and it was money well spent. For the price,quality, and size it was perfect. So now when I need water simple go over to the counter n pull the nozzle tab out pure instant purified water is here. Great product would recommend it to anyone who really hates trips to the local fish store. Also your fish would love you as well.

Comments: This is simple to use and fairly effective I personally like the product because it does its job.

Comments: Only had a week, but I used it to set up my 110 gallon tank, and it used about 25% of the filter. Used straight tap water (from Arkansas, eat your heart out New Jersey)Used SeaChem reef salt and all my tests 100% normal.

Comments: I've only used it once so far, but it was super easy to set up and attach to the kitchen faucet. After filtering 8 gallons it's starting to turn violet on the bottom to let me know it's doing it's job.

Comments: Found this easy to use, the only draw back is the fact that if you have hard water you will have to change the filter a little more, but for the price you can't beat it

Comments: I really like this product, great for my tank top offs and water changes. Its simple, and easy to use. The one problem I encountered was that the nozzle was meant to be screwed onto the focet. Unfortunately it did not dawn on me that the focet in my house didnt have a way for anything to be screwed onto it. So I had to find a connector to make it work.

Comments: Very easy to set up and to use! It was very nice obtaining water ready to use from my home instead of dragging the containers to the fish store for RO water.

Comments: simple and low cost just the way i like it does exactly what it's suppose to !

Comments: Nifty, I followed the directions for flow rate, and with my tap water being well water, I have gotten over 100 gallons from the first cartridge which is according to it's color changing indication, and it's only half used. All of my freshwater tanks use straight tap water and have never had problems, but I got this thing for my reef tank efforts. Only thing I can say is I don't have the equipment to be certain that it's water is the same as that from a more expensive RO/DI unit. I got this thing vs a more expensive unit not only because of the cost, but you don't have to worry about 100+ gallons per day of waste water. If it's doing it's job, it's the most economical thing on the planet, unless you live in San Diego I guess.....

Comments: Fast and easy,sure beat's renting a filter from a local water company.No hassels just pure clean water no TDS.

Comments: For its intended purpose, I think this works well. Its definitely for lower-volume applications, given its relatively slow speed and low volume, but if you've got a mini or a nano and want to use DI water, its gotta be the best for the money.
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<br />One word of warning: we have extremely hard water (which is why I wanted to clean it up before using it), and the filter lasted 10 - 11 gallons for me.

Comments: i bought this product in hopes to get good quality water at an affordable price. the convienience of getting water at the kitchen sink vs having to haul in water from an outside source was also a selling point for me.
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<br />unfortunately, i was only able to get 15 gallons of water from my sink. i live in san diego, and was hopiong to get at least 50 gallons of DI water. considering that the filters cost $20...DI water at $1.33 is not a good deal considering i can get it for $0.3-0.4 a gallon at the local store.
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<br />i am considering to try another filter to see if the amount filtered is the same.

Comments: Good product at a fair price. Is actually good at filtering more water than advertised safely. very easy to use

Comments: I only got about 50 gallons per filter, which is probably more to do with my cities foul water than the filter, but the phos and nit tested zero, so the quality is pretty decent. Slow at about 4 gallons an hour, which is fine for topping off, but to fill a new tank.....