Stadler Form Water Cube, for humidifiers and air washers, pack of 1 | For hygienic humidification, extends the appliance lifespan and keeps the water tank fresh for an entire season

I purchased this filter in April 2012. I know it's meant for humidifiers, but I have a large indoor fountain and was becoming weary of changing the water weekly, so I thought it was worth the $25 to try it. After all, moving water is moving water... be it in a humidifier or pumped through a fountain. This little cube has lasted an entire year plus, and I'm back to order my second one. It's done a nice job of keeping the water in the basin clear and for the most part, free of that slimy gunky stuff, as well as cut down on the mineral build-up.

I definitely noticed a difference in my Cane humidifier using this!!!! Before when I would dump dump out my water weekly sanitize, there was always a film (I stopped using the bottled distilled water). Once I put this in my humidifier I did not notice a film. This is awesome!!!!

Fits well in the Air O Swiss, and works better than the original silver stick that actually contained silver. The new replacement for the silver stick didn't seem to work at all, but this product worked better than I expected, and lasted all season. Would recommend to anyone who need a product like this.

When they stopped making a real silver stick for my Air O Swiss 7417 and the reviewers had nothing good to say about the replacement product, I thought I'd give this a try. I use the unit every day between November and April and since I dropped it in the reservoir last November, everything seems fine. Is it doing anything? I don't know. All I can say with any certainty is that nothing APPEARS to be growing in the unit, but that's a visual conclusion [I have not sent a specimen for culture]. Maybe nothing was going to be growing without it. The upstairs unit does not have this item, seems fine and I'm using a year plus old silver stick [you know; the one you are supposed to replace every year]. Happy coincidence?

I ran our AIr O Swiss Air Washer for a month before submitting that I needed one of these. During that month, the air washer pulled the dust & allergens out of the air & into the water; but then without the Silver Cube, scum started to accumulate in the water dish. Then I purchased the Silver Cube and installed it over the past couple of months and only the small flocculated dirt particles are present during the monthly cleanouts- hardly any of the bacteria scum that was present without the silver. I wouldn't have actually been a believer, had I not conducted the 'experiment' myself; but I saw the difference of results over three months- I'd rather have saved the $25 myself. So there is your unbiased feedback.

Fast!! Perfect!

From the picture, I thought this would be the size of a brick. It's about the size if the end of my thumb. And after 3 weeks use, is covered with junk it has pulled out of my water. The water is very hard and the piping in my rented home is pvc. I will probably have to replace this at six months but at this point it feels worth it. Totally satisfied with my purchase.

Worked great