Does it go bad? I have had mine for over a year.
453662
Have you kept it in the refrigerator? Personally I think if you've had it that long I wouldn't trust it in my tank. It's inexpensive where as your tank inhabitants is not. Toss it and get a new bottle would be my advice
453663
I'm sure eventually it does ?I do know it needs to be refrigerated after opening. If you did not do this it most lol elk is bad.
1406426
I have not had a problem with mine, have had it over a year. I use it every single day!
806540
I have had mine for abt a year and a half and honestly don't recall. I can't say that I like mine very well.
970326
I've had mine for a year with no problems. I think it's a great unit for the price.
788957
Having no problem with mine. But I should think it should last at least a year. I'd contact seller.
2006168
Yes, mine deteriorated after about nine months. I figured I got what I paid for and bought a nicer one next time.
448840
I have used them for up to a year after purchase. I wouldn't imagine that they would go bad as long as the seal isn't broken.
1523967
I have mine for about a year and it is fine. It should last a long time. A little goes a long way.
1763175
I've had mine for almost a year and it still works flawlessly. No problems.
1710070
Mine has not deteriorated in over a year after being opened. I assume that it will last a very long time in a cool, dark place.
98104
Yes it is. I have had mine for a year now and it has not given me any problems.
1219448
I've had mine for about 6 months and have never had this issue. It is used daily.
192101
Mine has. I've had it for about a year maybe, and that's what I usually do.
154131
I've had mine for about a year now. It seems to be working just fine still.
145159
I've had mine for at least a year or so and it has May 10 2012. Its still doing fine as long as you keep it dry.
2144862
I just read the other response. I have had mine for most of this year and I haven't had any problems with it. I use it routinly as at least 1 - 2 times per week.
529799
I have had mine for at least 1 year .I open it at least 10 or more times a day and have never had a problem with it.Still works good ,and I just love it.