I purchased 3 of them, and they leak. I had two 32 oz feeders I purchased last year.  One of those still works perfectly.  The other 32 oz split at the weld line in the threaded area and had to be scrapped.

ALL THREE NEW ONES LEAK.  One leaks slowly and only drips out in about 24 hours.  One will empty in about an hour and the third somewhere between. I have tried everything, but can't get them to leak either less or more.  It is not a "tightness" or a seal problem with the glass.  I even put on plumbers tape to see if the leak was coming from there....nope.  It has to be a bad hermetic seal of the weld between the bottom to the top piece of plastic.  This is manufacturing problem that will be widespread.  If they are not monitoring this part of the process, they have big problems.  These are JUNK.  I have to recommend you do not buy.  Wish I could get my money back but all the packing was thrown away.  I didn't expect problems like this.
I purchased 3 of them, and they leak. I had two 32 oz feeders I purchased last year. One of those still works perfectly. The other 32 oz split at the weld line in the threaded area and had to be scrapped. ALL THREE NEW ONES LEAK. One leaks slowly and only drips out in about 24 hours. One will empty in about an hour and the third somewhere between. I have tried everything, but can't get them to leak either less or more. It is not a "tightness" or a seal problem with the glass. I even put on plumbers tape to see if the leak was coming from there.... nope. It has to be a bad hermetic seal of the weld between the bottom to the top piece of plastic. This is manufacturing problem that will be widespread. If they are not monitoring this part of the process, they have big problems. These are JUNK. I have to recommend you do not buy. Wish I could get my money back but all the packing was thrown away. I didn't expect problems like this.