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: Is this too big for a small apt, and if so do they sell a smaller one?
Document: Then just set it up, very simple and a child could do it. At first the drip was so slow I thought I'd be waiting a life-time for a cup of water. But it speeds up overtime and it is easy to keep a good supply of clean water at all times. You get used to seeing the big friendly white elephant on the counter-top. Especially because you know it is full of healthy, drinkable and reliable water.
I was looking for an means to ensure I could have a sustained source of potable water. I have a portable Katadyn for times I'd have to relocate to a temporary shelter. But, for home, which is where I tend to stay, if at all possible, I wanted a long term solution to this goal. I thought of a water bladder but anything over 200 gallons gets rather big. A filter seemed to be the best solution.
Like magic I got clear clean water out of a still pond. If you need one this works great.
They have about a 3 inch separation inside the top section so, it would have to be a heck of a fall to get them to collide.. But if your life is dependent on them, it is a caution to remember. It does come with a red rubber stopper that can be put in one of the filter holes if one would break.
I think they bought water instead, after that.. I will be getting the charcoal filter tomorrow or the next day and will see if there is a way to adapt it to these filter units.. If it works, it will be the best of both worlds...For what I wanted, this unit meets my needs 100%... Amazon had one of the best prices.
One is a stopper. I couldn't follow the instructions about where that goes. The other is a kind of a thin circular piece of plastic. I have no idea what to do with that. [Edited to say that a helpful reader answered my question. ]The instructions for those two items could have been better. I don't think they are critical though, because it appears to be working just fine.
After running it through the Katadyn we put it through a Brita filter to improve taste. Having said that, the Katadyn taste is actually quite good. I will buy another in a heartbeat when this one is done!!!! And if we ever move back to the US I'll get one to ensure the water is healthy. Highly recommended.
I have used the Ceradyn Water Filter in Ghana, West Africa for the past seven years. It has performed very well, filtering up to 3 gallons a day. I clean it periodically with a moderately abrasive pad. Green algae grows on the filter after the top-fill container drains into the lower one.
When I was looking for a water purifier for emergencies. Katadyn has a proven reputation, that's why I chose them. If I ever have to use it, I won't have to boil water. I'd like to have 3 spare filter cartridges for it. The replacements would only be a few dollar less than the complete unit. I guess I'll be buying another one.
The outlets to the filters (three of them) have male tubing attach points already there, so it will be a matter of figuring out how to take three tubes and run them into one, and through the charcoal filter. The down side to this is it will take up space in the filtered water section and limit the amount that can be stored. If this does not work, I'm sure there will be a way to use it with a separate container.The construction of the container is simple but strong.
Answer: yes