Tetra Pond Fountain Block 6 Count, Controls Algae Growth In Ornamental Fountains

I've been looking for a quality algae control for awhile. The liquid ones have gone up in price but don't really control the algae that grows in my fountain. This one does the trick and is reasonably priced. We placed this in the fountain and it goes to work. No need to remember to add it quickly. We were gone on vacation and thought for sure we would need to clean the fountain upon our return, but no, the algae block did its job. Would definitely recommend if you have an algae problem.

My small waterfall/pond was getting overrun by green algae. A friend recommended this product, so bought it and once in hand, dropped a single small block into the pond near the pump inlet. Within a few days, water was clear again, and within a few weeks, all the stones were clean again. Pretty amazing. The package label is a bit confusing though, because it shows pictures of fish on it, like for use in Koi pond, but fine print says it will kill fish and birds. Not sure about the actual dangers, but the newts we have running about during rain (and getting into the pond) have not diminished in number.

Product works well. I've been using this product for quite a few months. Used to get it in larger size (28 g each). This is only 12 g each. Unfortunately, the larger size in bulk cannot be sent to CA, because of Prop65 (what a joke!). Widh they can sell the larger (28 g) size block in small quantity to get around CA Prop65. All in all, am satisfy with the product performance. Just make sure you are aware that this is only 12 g each, good for treating 30 - 100 gals.

I have had sooooo much headache with our wall fountain. Somewhere along the way we picked up a bacteria that took over our fountain. You have know idea what a mess it has been.The co. we bought the fountain from were puzzled also. One day while working on the mess I grabbed a sample bottle and scrapped it across the filter in the system which was once again plugged up with this slime. I then mailed this slime to the fountain co. and said "what it this and how do I get rid of it."That woke them up. I got a call from my "personal" rep. at the co. (She had received a call from who ever opened the bottle)They had it sent to the lab.The next call I got was to shut the whole system down, pitch all of the filters, bleach it out and keep the tank empty for at least 2 weeks. (I waited almost a month) Then they said to get TETRA and put a block in the tank when I refilled it. I used the regular products as always and added the block.Honestly, I have had NO MORE problems. Our water is sparkling clear, even our customers comment on it all of the time.For now, I would say that it had to be the TETRA since that is the only thing I did that was different.If it changes I will let everyone know but for now I don't hate the fountain anymore.Duckie

Product works well ... but I got sent the single block instead of the 6 pack as advertised and they sent a replacement but it was sadly also just one block. So I'll go elsewhere to get this product

I’ve tried a few different products to keep my fountain clean some worked but a few days would go by and back to going green. One cube has been in my fountain for a month still crystal clear my wife is always amazed how well this works. I highly recommend buying this if u have a fountain

Does not work at all. My fountain is greener than when I put it in a few days ago.

I put a small piece of one of these in my water fountain in the yard and it’s been over 30 days and water is still clear. I love this and I recommend it.