HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit (Pack of 2)
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Availability:
In Stock.
Arrives
Wednesday, Jul 1
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Size: No Size (Pack of 2)
Style: Green to Blue
Features
- The information below is per-pack only
- BENEFITS: Fight a severe algae bloom and transform your swimming pool water from green to blue in 24 hours with this easy-to-use system
- EASY TO USE: Simple 2-step system; Pack I is a strong algae-fighting pool shock with Cal Hypo; Pack II is a powerful flocculant that drops particles to floor for easy vacuuming
- VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula transforms water from green to blue within 24 hours without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock
- COMPATIBLE WITH ALL SWIMMING POOLS: This product is effective for all pool types that can vacuum to waste; Its ideal for vinyl-lined pools and won't fade liners
- YOU'RE ALL CLEAR WITH HTH: For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly
Description
The HTH Super Green to Blue Advanced Shock is a 2-part system. Pack I shocks your pool with a boost of chlorine, helping you fend off bacteria. Pack II is a powerful flocculant that drops particles to the bottom of the pool for easy vacuuming. Both packs work together to create beautiful, crystal-clear pool water within 24 hours. How To Use: Simply follow the on-pack instructions for both Pack I and Pack II. Pack I is the Cal Hypo Shock treatment and Pack II is a flocculant that drops dead particles to the bottom of the pool for easy vacuuming. About HTH Pool Care: HTH was developed with the pool owner in mind. We know that maintaining your pool water can be a lot of work. That’s why we're here every step of the way, helping you clear the uncertainty from pool care. With economical, easy-to-use solutions, HTH is designed to work hard so you're prepared to tackle whatever life throws in your pool. From balancing your water to treating green water, we offer a full line of products to keep your pool water healthy and your swimmers happy.
Brand: HTH
Item Weight: 14.4 Pounds
Item Form: Powder
Product Benefits: Controls Algae
Number of Packs: 2
Brand Name: HTH
Number of Items: 2
Unit Count: 230.4 Ounce
Model Number: 52038
Manufacturer Part Number: 52038
Manufacturer: Innovative Water Care
Item Type Name: 2-Step Swimming Pool Care Solution
Item Form: Powder
Product Benefits: Controls Algae
Item Weight: 14.4 Pounds
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jul 1
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Size: No Size
Style: Green to Blue
A little pricy but very effective on removing algae. We have used a few times because of user error. 1. Make sure you buy the right amount for your pool. We had to get two boxes for our 40,000 pool. 2. Make sure you test all chemicals and balance before using: ph, CYA and preferably a decent amount of chlorine. Check for leaks too. The chemicals do dissolve well and it works wonderfully but if your other chemicals are out of wack it will not work as intended. Our issues had to do with keeping CYA at a level to hold our chlorine. I only wish the flocc was liquid.
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Reviewed in the United States on May 5, 2026 by HappyGAfamily
Size: No Size
Style: Green to Blue
Cleared the pool overnight. Added step 1 and filtered for a few hours until dissolved. Then turned to circulate and added step 2 for about 3 hours. Turned off pump overnight. Everything sank to the bottom and the water was clear. Vacuum to waste, then added a little more water to replace it. Pretty easy and quick results. Pool is 12, 500 gallon and I used 1 box. Says treats up to 20,000 gallon though.
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Reviewed in the United States on June 3, 2026 by Arnoldclassics
Size: No Size
Style: Green to Blue
I give this 5 stars. My pool was really green and in rough shape when I started. It was literally like a pond, tadpoles and all. It took a lot of vacuuming and consistent work, but after about a week of following the treatment and keeping up with the cleaning, my pool is looking great. It’s still just a little cloudy, but the transformation has been impressive. I did have to use two treatments to get the results I wanted, but considering how bad the pool was, I expected that. If you’re willing to stay consistent and put in the work, this product definitely delivers. Highly recommend!
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Reviewed in the United States on June 3, 2026 Reviewed in the United States on June 3, 2026 by chrystal
Size: No Size
Style: Green to Blue
I use this every year! Works wonders for our lined pool.
Reviewed in the United States on June 12, 2026 by Krista Koster
Size: No Size
Style: Green to Blue
Works great
Reviewed in the United States on May 4, 2026 by Amazon Customer
Size: No Size
Style: Green to Blue
I habeen using this product past 15yrs. Does an amazing job. All low marks are due yo people using incorrectly. Just make sure when you dump the flaca in strainer your pump is set to recirc.
Reviewed in the United States on April 15, 2026 by Tommy Parris
Size: No Size
Style: Green to Blue
Our 25,000 gallon pool started growing algae on the pool walls. I wanted to take quick action as all the grandkids were coming over next week. I evenly applied the 4 packets of "Advanced 1" across the pool, and worked the bottom to ensure all material was dissolved (took about an hour). Then I turned on the recirculation pump and slowly poured the "Advanced 2" packet into the pool skipper as directed. Within 15 minuted the pool pump slowed to 20% due to my 4 large filters being terribly clogged. RESET 1...I stopped the pump, removed the full set of filters, and cleaned each of them with a water jet spray, resealed the filters into their pressure container and reset the pump. RESET 2....Pump pressure and water flow was normal for 30 minutes, then degraded within the hour. I stopped the pump again, removed the full set of filters, and cleaned each of them again. RESET 3....Pump pressure and water flow was normal for first hour, then degraded in 2 hours. yep, had to start all over cleaning out the filters. By now it is getting dark and had to stop for the day DAY 2.....Pool water is still super-cloudy and cannot see bottom drain. Restarted pool pump. It lasted about 2 hours this morning and again clogged. I am hesitant to put in 4 new filters for fear of ruining them as well. So still using my 1-year old filters in hopes of clearing out most of the micro-particulate materials suspended in the water first. Then I will replace filters. I see no improvement in the super-cloudy particulate water but will continue the process. THIS WAS NOT THE PLAN. I only hope I can get the water clear enough for the grandkids this week. The amount of time spent so far is just crazy, and no remedy in sight yet. Some customers are happy, but I will forever AVOID THIS PRODUCT and MANUFACTURER.
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Reviewed in the United States on April 29, 2025 by Pete Blizzard
Size: No Size
Style: Green to Blue
This is my second year using Green To Blue. I was confused about how to use the product the first year. When I was finished it all made sense to me so this year I was much more successful cleaning my pool. I don’t have a pool cover so this is a three step process for me instead of two steps. 1. Prep you pool. By this I mean take your skimmer and clean as much debris, sunken leaves and such, off the bottom as you can. I had a ton of leaves hidden in that green, murky mess. I knew where the leaves collected and swept every day for a week. Because of the murk I never knew what I was going to drag out. The less debris you have the better this product woks. 2. Use the correct amount of shock according to directions on the box and bag. Filter your pool. 3. After the shock is thoroughly mixed in, pour in the clarifier. Recirculate without filtering for an hour. Let it sit still overnight to allow all the particulates to settle to the bottom of the pool. Set the pump to discharge and vacuum your pool. Mine was so bad I had to shock the pool a second time. The pool was cleaner but not clean. I could see all the settled debris and swept the floor again. The fewer leaves in the pool the better the product works. Repeat shocking, vacuuming, and debris removal until your pool is clean. If this seems excessive that is a reflection of the condition of my pool not the product. I think I could have walked in that water. It sparkles now. Oh, the product does not turn your water blue. At least it didn’t turn my water blue.
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Reviewed in the United States on May 19, 2025 by Dave Norris