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In The Swim Pool Super Opening Chemical Start Up Kit - Above Ground and In-Ground Swimming Pools - Up to 35,000 Gallons

  • Based on 15,972 reviews
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Availability: In Stock.
Fulfilled by In The Swim Pool Supplies

Arrives Friday, May 22
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Style: Kit Only


Size: Super - 35k gallon


Features

  • Save time and take the guesswork out of measuring chemicals when opening your pool with our pre-measured pool opening kits.
  • (4) bags of 99% sodium dichlor (Di-Zap), which will get your pool water clean, clear, and safe to swim in.
  • Clarifier keeps your water crystal clear by coagulating dirt, which helps your filter be more efficient.
  • Algaecide works in conjunction with pool shock to defend against multiple types of algae from invading your swimming pool.
  • Sun sorb oil and scum absorber will soak up suntan oils, body oils, grime, and scum, keeping your water clear.

Description

The In The Swim Super Start-Up Kit for swimming pools up to 35,000 gallons has all the best chemicals for sparkling pool water. With pre-measured formulas designed for use in pools of specific sizes, In The Swim start-up pool chemical kits help take all the guesswork out of preparing your pool for swimming. Opening your pool each season will be faster, easier, and more convenient than ever with In The Swim Start-Up Pool Opening Kits. Prevent Stains, Rust, & Scale In The Swim Stain Away for swimming pools prevents surface stains and discoloration of water. It also helps disperse stains and scale from pool surfaces while controlling iron and other metals. Spring Stain Away is great to use at pool opening when filling the pool as it will help control the minerals and metals in the fill water, protecting the pool against staining and scaling. Clear Cloudy Water Fast In The Swim Clarifier for swimming pools helps coagulate dirt and other suspended particles clearing cloudy pool water. Adding In The Swim Clarifier also increases your pool filter's efficiency. Fast acting and biodegradable, this water clarifier does not affect the chemical balance in the pool. Fast-Dissolving, Stabilized Granular Chlorine Shock The Super Start-Up Kit includes 4 one-pound bags of 99% sodium dichlor chlorine pool shock that quickly dissolves to solve pool problems fast. This powerful pool shock is great to use for spring pool openings and ideal for a quick chlorine boost. Algae Beware! Algaecide for control of algae and algal slime growth in swimming pools is also included. This algaecide is non-metallic and does not cloud or stain the pool when added. It is very effective at preventing and treating many types of algae including green and yellow mustard algae. Stop Grease, Grime & Waterline Scum The Sun Sorb attracts and absorbs lotions and oils to improve water quality

Brand: In The Swim


Item Weight: 16 ounces


Item Form: Liquid


Product Benefits: Maintains Clean Sanitized Water


Number of Packs: 4


Brand Name: In The Swim


Number of Items: 7


Unit Count: 1 Count


Model Number: KSS300001AE


Manufacturer Part Number: KSS300001AE


Manufacturer: In The Swim Discount Pool Supplies


Item Form: Liquid


Product Benefits: Maintains Clean Sanitized Water


Item Weight: 16 ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 22

This item is non-returnable:

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


  • Great kit
Style: Kit Only Size: Super - 35k gallon
Love this kit. Just ordered for the second year. It gives you step by step instructions. I had no issues opening my pool myself. Turned out better than my pool guy’s efforts. My pool is 25k gallons for reference. The dizap shock in the kit is the best. I wish it wasn’t so expensive because I have tried many and this by far works so well. ... show more
Reviewed in the United States on April 14, 2026 by nurse2b2011

  • GREAT PRODUCT
Style: Kit Only Size: Super - 35k gallon
repeat buyer. Everything i need to open my inground pool in spring
Reviewed in the United States on February 20, 2026 by LAK

  • Makes Pool Opening a Breeze
Style: Kit Only Size: Super - 35k gallon
The In The Swim Pool Super Opening Chemical Start-Up Kit is a lifesaver for opening my pool each season. It includes everything I need to get my pool water clear and balanced, saving me time and effort. The instructions are straightforward, and the products work efficiently to eliminate algae and cloudy water. This kit is suitable for both above-ground and in-ground pools, and it covers a large capacity—up to 35,000 gallons. It’s a great value for the quality and quantity of the chemicals provided. My pool is ready for swimming in no time after using this kit! Highly recommend this for hassle-free pool opening. ... show more
Reviewed in the United States on December 18, 2024 by Grandpa Obi

  • With any product working like it should and claims!
Style: Kit Only Size: Super - 35k gallon
I had just ordered a pool after not having one for over 20+ years,So I didn’t know about a lot of the new products I just knew what I needed and this opening pool kit seemed to check off all the boxes,It’s easy to use the directions are clear,All I had to do was read which one to start off with,The value of the product was affordable considering what you would pay for the individual bottles and shock packets, I couldn’t believe the prices for the pool products that you just have to have,So far after using this product I have only had to deal with iron from my well, I would’ve liked to have a couple of bottles to help remove the iron out,But I bought some floc and it really helped and the clarifier did a good job, I still have some shock and algacide left since I have been fortunate to not get algae in my pool which concerned me, I would recommend this product to anyone who wants to have what you need to get your pool up and running to enjoy,So for the money it’s a good deal and it worked for me, I am now enjoying a clean and clear pool,But I have to say having the right sand filter and pump will make all the difference in the chemicals working properly, I hope I have helped others considering buying this product by my experience using it, I wouldn’t hesitate buying it again!!! ... show more
Reviewed in the United States on July 8, 2022 by Catherine Arnette

  • It works!
Style: Kit Only Size: Super - 35k gallon
I have used this product in our pool for a couple years. If done right, it keeps it clean and clear!
Reviewed in the United States on May 13, 2026 by mark e peterson

  • Repeated use each Spring.
Style: Kit Only Size: Super - 35k gallon
Use annually… Always seems to work well. Another Spring looking forward to a good swimming season.
Reviewed in the United States on May 12, 2026 by Hutch

  • Buy
Style: Kit Only Size: Super - 35k gallon
I buy this every year to open up and to close. It takes the guess work out.
Reviewed in the United States on May 9, 2026 by Amazon Junkie

  • Easy to use. Great results!
Style: Kit Only Size: Super - 35k gallon
Started with a green mess with sediment at the bottom. Vacuumed to waste first. I still have one more chemical, Algicide, to add. This was in one day. Before and after. It’s my 3rd year using their pool opening and closing kits. Cheaper and just as good, if not better than the pool store’s kits! The instructions were easier to follow. The last time I bought a kit from the pool store, it came with zero instructions! Note: I normally buy a new cover every year and always opened with clear water. First year closing with a used cover. It leaked rain water through the winter and created a mess. *** Also advise using a new cover every year ... show more
Reviewed in the United States on May 26, 2024 by Jacie

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