Swimming Pool Phosphate and Algae Remover Chemical for Pools - 32 oz

Stuff is amazing. We could see the bottom of our pool and several, I don't think we could see the first step on the ladder. (1st photo) We add a half bottle or so of the Revive? Waited 24 hours and it was nasty but we could see the bottom as so much crap algae had sunk (2nd picture). Our pool was almost clear at this point but we had swirled a lot up from vacuuming so we re-schocked the pool, let the filter run for an hour amd used the rest of the Reveive again. Another 24 hours and a vacuum later and it looked perfect (3rd photo). For reference we have a 10,000 gallon pool, 18ft x 54 inches.You absolutely must vacuum the water (and nasty) out of the pool, bypassing the filter. Don't let that water reenter the pool. Refill the pool when your done. Then get your pool chemicals square again.My only complaint is that there was still a lot of globs of algae floating on top. That's why we did it twice. Maybe once would have been fine but I didn't want to risk it.Yes, this stuff is pricier than other brands but it works wonderfully!

I've been handling our in-ground pool for many years; open and close it myself and perform all maintenance. THIS was the first time it ever got out of control during the summer.The algae bloom started 3 weeks ago today, after the pool being perfect since I opened it the last week of May. My mistake was: not immediately shocking and vacuuming to waste when there were only traces. Should have known better but, stirred it up with an Aquabot and brushed the walls. Within a couple of days, the water clouded and started turning green. And then we went on vacation for a week. On the return, it was awful. After shocking and running the filter for a few days, a week ago it still looked like the first 3 photos. Not any better, during the hottest days of the year.At that point, I'd gotten the first of what would eventually be 2 bottles of Revive; took the first set of photos; promised myself to write a great review, if it worked. (Somewhat hopeful after watching demo videos on YouTube). Shocked the pool again and sprayed it; waited the weekend; didn't make much difference (even though I could see some things were going on; some floating debris; etc).At that point I called the manufacturer's tech support line, and spent a while talking with a very helpful, knowledgable woman. Her recommendation was to supershock it before hitting it with another bottle Revive (which doesn't directly kill algae, which was why the discussion with her was so helpful. It takes phosphates out of the water, which are food for the algae, in addition to other organic materials and contaminants. Calcium hypo shock to kill the algae in combination with then taking away its food supply is what's needed).Over the next few days: I shocked the pool, once per night in the early evening, and ran the filter (which is a Hayward S200 sand filter) almost continuously. No vacuuming or robot-ing to stir up the bottom. No wall brushing. Sand filters clear the water slowly. Backwashed the filter twice a day - each time, there was definitely cloudy material being removed, and the water gradually started to improve, but SLOWLY. After 5 days of steady progress, I still couldn't see the bottom of the pool, at most the bottom step, but the toxic radioactive green had settled down to a hazy milky grayish green. Remember: water is still very cloudy, can't see the bottom, can only see the improvement in that the top few inches water layer was "better" and the top sides of the pool near the waterline were showing traces of blue. (and remember, still no additional Revive, or any other chemicals, during this time).At this point, I felt the pool would continue to clear SLOWLY by maintaining this per-day and that after maybe another week or more, it would be mostly back. Good, but not great, and very gradual.So 24 hours ago, with the chlorine high, I sprayed it with bottle #2 of Revive.The 2nd three photos are from this morning, 24 hours later. Amazing. The water isn't clear yet but it's hugely better. Most of what was in the water has settled to the bottom. You can see it best in the photo of the shallow end of the pool, the last one (and a pattern on the bottom where a stray frog disturbed it). There's a nice layer of sludge on the steps and a thick layer of white sandy gunk on the floor (just as tech support predicted). Some clumps of algae have floated to the surface. (more on that shortly). You can see the color of the liner and without adding the Revive, it would have taken days to get to this point.I vacuumed carefully to waste, to stir up as little as possible. Refilling the pool now for another vac session; one more should do it. More material continues to either settle to the bottom, or float to the surface and coagulate into patches. Those patches, as I've found, can be skimmed with a small bucket and dumped into a larger one; they're fine algae coagulated particulate. While I'm waiting for the water level to rise I'm skimming off buckets of this and throwing it out (repeated 5 gallon buckets of cloudy grayish slightly yellow greenish material). Skimming by hand seems to be the best way to eliminate as much as possible; don't want to run this through the filter and have some of it come back into the pool without being caught by the sand. This is tedious but I'm sure it's going to save much time overall in finishing the cleanup.I could have waited another day for the initial vacuuming, to let more material settle, but decided to get rid of the bottom layer sooner, as I could see that the surface patches were coming from chunks of it breaking off and rising up. I'm putting this down to how badly contaminated the pool was.In short: I can highly recommend this product, and as other successful reviewers have noted, PATIENCE is in order. Also, for a pool as highly contaminated as mine was to start, I can see that one bottle wasn't enough. Impossible to know if using 2 bottles at the start would have worked; or whether it would have been better to shock more heavily, wait a few days, and then hit with one or two bottles at that point.Update #1: After 2 vacuum-to waste sessions, running the filter constantly, and a few backwashes, it's back to normal (still slightly cloudy but another day or two of filtering will make it crystal clear). Total time after applying the 2nd bottle of Revive 3 days.Update #2: (2 years later, May 2021). I haven't had to use Revive since my initial review. I've been more careful about keeping chlorine levels somewhat higher, and staying ahead of algae. Watch for it to inevitably show up somewhere; brush it away and shock; anything more than "small" amounts of algae, do a quick vacuum to waste to get RID of it immediately. I have one bottle of Revive on hand just in case. I still highly recommend this product as it was the only solution that worked, 2 years ago. This extensive review and photos shows it all in detail.Comment #1: For reviews that says that the product "is water" or "does nothing", that's not true. I wasn't going to write this detailed review unless it actually *worked*. It did exactly what the instructions (and tech support) said it would do. (and as I was spraying and distributing it on the pool, I could already see some coagulation of materials on the surface). For it to work: you HAVE to shock the pool and kill all or at least most of the algae, in combination with hitting it with Revive afterward. As tech support told me, Revive won't kill the algae (although it does take away its food supply - phosphates in the water). You need shock to kill the algae, and you have to use the right kind of shock: calcium hypochlorite shock

It's almost pool time, peeps! And if your pool is anything like mine was last season, it's not just water that's chilling in there. Let's talk about my green-thumbed (or should I say green-skinned?) uninvited guests: algae. They had a pool party without inviting me, and it was REVIVE! Swimming Pool Phosphate and Algae Remover Chemical for Pools that crashed their bash and showed them the exit.Last season, my pool was starting to look more like a salad bar than a swimming spot. But then, REVIVE! stepped in like a bouncer. This product didn't just reduce the algae; it practically made them pack their bags and leave town. How effective was it? Imagine telling teenagers the internet is down. Yep, that fast.But let's get real for a second. Before you pour your hopes (and REVIVE!) into the pool, do a little pre-party prep. I'm talking brushing and sweeping. It's my personal belief that this little dance with the pool brush sets the stage for REVIVE! to do its thing. It's like telling the algae, "It's not me, it's you," and then giving them the boot.Now, onto the moolah. Is the price fair? Considering it saved my pool from becoming a swamp thing sequel, I'd say it's more than fair—it's a steal. Plus, it's user-friendly. You don't need to be a pool expert to use it, which is great because my pool-related expertise extends to floating on a raft with a hat over my face.However, let's temper expectations with a dash of reality. The severity of your algae situation might influence how well REVIVE! works for you. If you're dealing with the underwater equivalent of an overgrown jungle, it might take more than a single heroic effort. But for the average rebel algae uprising? REVIVE! has got you covered.In the unlikely event that REVIVE! sends an SOS instead of an OMG, it might be time to call in the cavalry (a.k.a. pool professionals). Because sometimes, algae just don't know when to quit.In summary, I'm no pool expert, but I highly recommend giving REVIVE! a shot. It turned my pool from green to clean, making it the unsung hero of last summer. Here's to hoping it'll do the same this season. Cheers to clear waters and happy swimming!

Used per directions and it didn't work. Directions state it may take several bottles, for the price of these bottles if it's going to take several, you may as well hire a pool company to clear it for you. What did work was Bio dex.

Spray on the pool, next morning vacuum to waste.Clean pool.

I have gotten this product on many occasions at the pool supplier that I go to. It works amazing and fast to clear up the pool. Only downfall is that it is very expensive.

Great product, only reason for not giving five stars. Ty e Boyle was leaking when delivered.