Instruct: Classify the given Amazon review as either positive or negative.
Query: Requires Opening Holes

I had a similar chlorinator that was made by a different mftr. I was disappointed when I received this one because it does not come with holes in the bottom part. You have to poke holes in it yourself so that the water can get in and the chlorine tablet can activate. This was no small task because there are about 30 holes that I had to poke and the plastic is pretty thick. The instructions tell you how many holes to poke according to the size of your pool. The other chlorinator that I had came with the holes already in it and it also unscrewed so that you could put in the tablets. This one is a little awkward because you have to pull off the bottom part then force it back on. Just be aware of this before you purchase it.