Make the most of your swimming pool with the best pool treatment shocks for keeping your backyard pool crystal-clear this summer.
At some point, it’s bound to happen with your swimming pool…
The water gets cloudy, yucky, or the pool water develops that foul ammonia smell that you get from poorly ventilated indoor swimming pools (lookin’ at you, local YMCA).
The cause of cloudy pool water and excess chloramines can be varied but generally comes down to the fact that your chlorine levels in the pool are too low.
Maybe you had a ton of people over and everyone was enjoying the pool, or hot weather burned off a ton of chlorine, or heavy showers diluted the pool chemicals.
No worries, you can fix cloudy pool water by shocking it.
Shocking the pool raises chlorine levels to a higher-than-normal level, killing off organic contaminates. From there, your pool filter and pump do most of the work, kicking out the bugs and dead plants.
Pool shocks come in a variety of different formats, including liquid, powder or even a tablet.
Let’s dive into the deep end and take a deeper look (ha—swimming pun!) at the best pool shocks for your swim pool and spa.
HTH Ultimate Pool Shock and Chlorine Cleaner
HTH makes some of my all-time favorite pool cleaners (yes—I am that much of a pool nerd that I have favorite cleaners) and also recommend their pool algaecide for clearing green water and their chlorine tablets for regular chlorination of your pool or spa.
The HTH Ultimate Pool Shock is a powder shock that includes half a dozen 1lb treatments. Each lump of powder can treat up to a 13,500 gallon pool and this shock is strong enough to drop-kick algae and bacteria without damaging pool liners and above-ground swimming pools.
The HTH Ultimate Pool Shock takes about 24hrs to do its thing (always test the pool water before diving back in!), contains a built-in clarifier, and prevents scale formation. Giddyup!
DryTec Hypochlorite Chlorinating Pool Shock
The DryTec Hypochlorinate Pool Shock is a favorite among casual pool owners and even pool servicing professionals. It’s one of the stronger ones out there, made of 68% calcium hypochlorite, making it ideal for nuking your pool after a big party, rainstorm, or even after some weeks or months of neglect.
DryTec sells these in a variety of quantities, with a single “serving” costing around $10 and a 12-pack running your around $90 (check Amazon for current pricing and availability). More industrial users can also take advantage of bulk pricing and purchase the DryTect Pool Shock by the 24. As mentioned, people love this stuff, with over 2,000 five-star reviews on Amazon and counting.
Whether you are looking for a reliable shock for regular pool cleaning or need to tackle a yucky pool, the DryTec Pool Shock has you covered.
Zappit Cal-Hypo Pool Shock
Another heavy-duty pool shock for medium to severe cleaning is the Zappit Shock, which has a 73% cal-hypo formula with up to 70 percent of free chlorine. A granular shock that won’t over-stabilize your chlorine levels (thanks to no CYA), this bad boy comes in a big old bucket of algae and contaminant-killing awesomeness.
Users note that the powder is very fine and that you should take extra care when darker clothing when handling this product. Dilute before use, sprinkle for regular cleaning, and keep the crystal-clear waters of your pool swimmable and clean for the duration of the pool season.
Austin’s Pool Tech Liquid Pool Shock
There are a few different ways to use pool shock for killing off unwelcome algae and pathogens, with granular (calcium hypochlorite) and liquid shocks (sodium hypochlorite) being the two most popular. Liquid shocks are popular as they are easy to apply and don’t require pre-mixing powders. Pour it in the pool and move along.
Austin’s Pool Tech Liquid Chlorine Pool Shock checks all of the boxes for a reliable and powerful shock. At the beginning of the season, use 50-100 ounces of liquid shock to get the pool balanced (per 10,000 gallons) and upkeep takes just 11oz for keeping your water nice and clean over the summer and swimming season.
Leisure Pool & Spa Chlorine Pool Shock
Leisure Pool & Spa’s chlorine pool shock is one of the few liquid chlorine shocks that are available online for sale, usually priced cheaper than you would pay at a pool store (check Amazon for up-to-date pricing).
Formulated with 12.5% sodium hypochlorite (that’s liquid chlorine, sports fans!) this liquid can be poured directly into your swimming pool or through a metering pump. You can use it to shock the pool after a big rainstorm or even add a little regularly to your pool during the off-season to keep the pool clean and save you a ton of work and money when it comes to reopening.
Leisure Pool & Spa are longtime specialists in the pool chemistry game, producing industry-leading algaecides, calcium increasers, phosphate removers, and so on.
Clorox Pool and Spa Salt Essences Chlorine-Free Shock
Best non-chlorine shock for salt swim pools
Non-chlorine shocks are a good option for saltwater pools and for people who simply don’t want to deal with risking increased chlorine levels for a sustained time.
Clorox’s Chlorine-Free Oxidizing Pool Shock helps target chloramines (the byproduct of chlorine interacting with bodily fluids and usually what causes that foul ammonia smell you experience at poorly ventilated and balanced public swim pools).
Each pack contains six 1lb tablets that seek and destroy organic contaminants, reducing cloudy water and returning your pool back to a clean and sparkling state.