Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: do you need to change the filters? How do we know when it needs changing?
Document: Not all water filters are the same as to what they protect you against, do your homework. I had been using a Brita but the filter was ready to be replaced so I did some research and decided to change to a Seychelle water pitcher, which is taking me a little while to get used to but I'm happy with it.
From what I understand, this product needs no replacement filters and only a simple vinegar cleaning every so often. I feel like this is definitely worth the money because I have used the X20 1 time use packets that do the same thing but cost about a dollar each (1 packet per 18-24 oz. of water).
You can bring as many gallons of jugs you'd like. Problem is that alkalized water needs to be consumed within a few days or it looses its Ph level. Now I know that I always have clear and pure alkalized water every day. Wonderful product!
The Original IonPod 2 Pak that I order was recommeded by a health and body builder professional for making and drinking alkaline water. The filters are permanently installed in the drinking vessel. The whole IonPod needs to be replaced after a certain number of months. There's really no way to dry out the IonPod; therefore, I have a concern regarding mold and bacteria. Also, rust which happened to mine within only 3 uses.
Apparently the filter needs to be replaced about once a year, that works out to alkalized water for pennies a day.
These strips are intended to test urine and saliva. You need to use testing drop or a meter to get an accurate result. One other thing to be aware of is that the Ionpod is not a water purifier.
"Wonderful". I see that honey is good but it needs power for a longer period of use, and I hope to tell you about it soon
I was skeptical, but recently began the need to start drinking alkaline water due to health issues. My "drops" I have been putting in my water are good too, but you continually buy them. So, my boyfriend bought us each an IonPod and I was amazed at how alkaline the water is! The IonPod comes with "tester" drops.
Indeed purchased for a friend of mine, but I was surprised yesterday that he says that it is impractical and harmful, but you do not know the true
So I bought this as I wanted to try alkaline water. It has been 1 1/2 week now and I measured the ph and it has gone up to 8.5 ph after letting it sit for 15-20 minutes in the Ionpod. I am taking it slow as I have just began.The filter lasts about 6-12 months and you can buy replacement filters from their website.
Answer: yes