9 Best Liquid Pool Covers in 2024 – Reviews & Top Picks

If you’re like most pool owners, you know that maintaining your pool at a comfortable temperature is a constant battle against the elements. To combat dropping temps and lower water levels, you most likely place a pool cover or solar blanket on top of your pool each night.

But have you heard about liquid pool covers? Instead of struggling with a heavy, messy pool cover, you can pour a solution into your pool that is nearly as effective. Liquid pool covers reduce evaporation, which conserves your pool’s temperature.

If you’re not sure which product to try in your pool, we’ve got you covered. We’ve listed the nine best liquid pool covers, ranked them from our top pick on down, and provided you with helpful reviews, along with quick-reference pros and cons lists. Be sure to check out our buyer’s guide for more useful purchasing tips.

A Quick Comparison of Our Favorites in 2024

Rating	Image	Product	Details
Best Overall		Natural Chemistry Liquid Pool Cover	Advanced mono-layer technology 85% decreased water evaporation 70% reduced heat loss	CHECK PRICE
Best Value		Tropical Fish Liquid Pool Cover	50% water evaporation reduction Biodegradable Safe for all swimmers and pets	CHECK PRICE
Premium Choice		LO-CHLOR Liquid Pool Cover	Lessens evaporation Improves pool temperatures Thin undetectable layer of protection	CHECK PRICE
		Pool Basics Liquid Pool Cover	Minimizes evaporation Safe to use Works with all filtration systems	CHECK PRICE
		SunHeater Liquid Pool Cover	Reduces evaporation Easy-to-pour opening Works best in cooler locations	CHECK PRICE

The 9 Best Liquid Pool Covers

1. Natural Chemistry 7100 Cover Free Liquid Pool Cover — Best Overall

Our recommendation for the best overall product goes to Natural Chemistry Cover Free liquid pool cover. You’ll be able to save water and money with this product’s advanced mono-layer technology, which creates an invisible barrier.

We found many examples to support Natural Chemistry’s claims that it decreases water evaporation by up to 85% and minimizes heat loss by as much as 70%. This liquid pool cover conserves water and heating energy with its excellent surface tension, which helps it remain in place or reform during swimming.

This product is pH is neutral and safe to use. Since it’s not irritating or dangerous, swimming can be done right after adding it to your pool. The amount of solution you’ll need and how quickly you’ll use the 32-ounce container varies greatly on weather conditions and the volume of water in your pool.

2. Tropical Fish Liquid Solar Blanket — Best Value

We selected Tropical Fish liquid solar blanket as the best liquid pool cover for the money. At a budget-friendly price, this product works well to improve your pool’s temperature by reducing water evaporation by up to 50%.

You can use this liquid solar blanket with confidence. Tropical Fish is biodegradable, environmentally friendly, and non-toxic. It’s safe for all swimmers and will not harm a pet that may drink from the pool surface.

The chemical balance, filtration system, and liner of your pool will not be negatively affected after adding this product. Tropical Fish passes through sand, cartridge, and DE pool filters without creating a problem. You may notice an oily residue on your pool water surface if you look closely after using this product.

The 310ml bottle comes in a nautical design. While you may find it charming, you’ll most likely have a difficult time accurately measuring the required amount.

3. LO-CHLOR Aqua Blanket — Premium Choice

Our premium choice goes to LO-CHLOR Aqua Blanket. Once you add this liquid pool cover to your pool, you’ll only know it’s there by lessened evaporation and improved pool temperatures.

This product provides an invisible barricade. LO-CHLOR explains that its liquid pool cover rests on your pool’s water surface at the minuscule depth of a single molecule. This ultra-thin layer works effectively to lower your pool’s rate of evaporation, which in turn, saves you money and extends how often you need to add chemicals.

It’s safe to use and is compatible with all filtration methods and pool liners. However, it does not state whether it’s non-toxic, biodegradable, or environmentally friendly. Also, compared to other products on our list, it has a slightly higher price.

4 .Pool Basics 2706PB Liquid Solar Cover

You’ll be able to extend your swimming season if you live in a cooler climate with Pool Basics liquid solar cover. This product works effectively with all filtration systems, including saltwater pools. It’s safe to use to prevent your pool from losing heat by minimizing evaporation.

We found that this product works reasonably well to conserve water, which in turn, keeps your pool at a comfortable swimming temperature. You’ll use fewer pool chemicals, as the protective layer provided by this liquid solar cover keeps chemicals from breaking down and being lost to evaporation.

Compared to other products on this list, we found that this product is a bit higher in price. Also, you may need to add to use this liquid solar cover more frequently than other products to maintain its productivity.

We could not determine if it’s non-toxic, biodegradable, or environmentally friendly. Safety precautions should be taken with proper storage to keep out of reach of children and pets.

5. SunHeater SHS32 Solar Blanket Liquid

At a more affordable price, SunHeater Solar Blanket Liquid reduces evaporation, which helps prevent heat loss and chemical loss. It creates an invisible barrier that’s non-toxic and safe for your entire family.

The 32-ounce bottle requires only 4 ounces for every 20,000 gallons of water. It’s unclear how long this product lasts. The bottle is packaged with an easy-to-pour opening and measurement markings. Unfortunately, the bottle is opaque, which impedes accurately using the marks.

We found mixed levels of success with the SunHeater Solar Blanket Liquid, depending on location. Cooler areas seemed to gain better pool water temperature increases. In hotter, sunnier climates, it was not as effective at reducing evaporation. Also, we learned that it might not be compatible with DE filters.

6. Natural Chemistry 20711 Pro Series Liquid Cover

For a more affordable per ounce product from Natural Chemistry, consider their Pro Series Liquid Cover. This product comes in a gallon container, which lasts longer and requires less frequent purchases than quart containers.

We found that this liquid pool cover performed reasonably well to conserve water. Natural Chemistry uses advanced mono-layer technology, which creates an invisible barrier to decrease evaporation and reduce heat loss.

This liquid pool cover is formulated to maintain optimal surface tension. After the surface is disturbed by activity or wind, it reforms quickly into a uniform cover.

This product is pH-neutral and safe to use. We could not determine if it’s compatible with all filtration systems. Also, it’s not listed as non-toxic, biodegradable, or environmentally friendly.

7. Ecosavr 99999 Solar Fish Liquid Pool Cover

You’ll be able to significantly conserve water loss from evaporation and reduce overnight heat loss in your pool by half with the Ecosavr Solar Fish liquid pool cover.

Unlike other products, which are poured into your pool and may require agitation to set up a protective layer, Ecosavr is packaged in a fish-shaped plastic pouch that is dropped in its entirety into your pool. The fish pouch sinks to the bottom, where it slowly releases its contents over a period of a month.

You’ll need to carefully follow the instructions or watch the instructional video to properly prepare this product. We found that it works rather well to increase pool temperature. The liquid pool cover relies on water pressure to be released, which can vary between pools.

While Ecosavr is affordable and seems safe to use, we could not determine how it will affect your pool chemicals, filtration system, or whether it’s eco-friendly or non-toxic.

8. SeaKlear 1112000 Solar Shield Liquid Pool Cover

Using a unique, patented formula, SeaKlear Solar Shield liquid pool cover works within the first week of application. It’s long-lasting and can remain effective for a month in non-extreme weather conditions.

SeaKlear claims that it can prevent up to 1,500 gallons of water lost to evaporation each month. We found mixed results among pool owners consistently using this product. There were many examples of it preventing heat loss overnight, but there were just as many disappointed consumers who did not notice any change.

SeaKlear seems to be safe to use. It may not be compatible with a DE filter. Also, we could not find whether this product is non-toxic or safe for the environment.

9. Ecosavr Heatsavr Liquid Cover

For a non-toxic and environmentally friendly liquid pool cover, consider Ecosavr Heatsavr Liquid Cover. This product creates an undetectable layer on your pool water’s surface to enhance heat retention by slowing evaporation.

We found that Ecosavr Heatsavr worked well for most pool owners. However, it does not state compatibility with filtration systems or pool chemicals. We discovered instances in which this liquid pool cover clumped together, rendering it ineffective.

This liquid pool cover comes in a reasonably priced 32-ounce bottle and is packaged with helpful measurement marks on a clear bottle. For most pools, 4 ounces once a week should suffice.

Buyer’s Guide – Choosing the Best Liquid Pool Cover

Even after reading our reviews, you may still be considering whether to try a liquid pool cover. In this buyer’s guide, we’ll compare how adding a liquid pool cover compares with covering your pool with a solar blanket. Besides debating the benefits and drawbacks, we’ll also address important factors to consider before you make a purchase.

Liquid Pool Cover vs. Solar Blanket

While it’s true that a solar blanket yields similar results as adding liquid pool cover, the two products have key differences. Deciding which product to use may come down to personal preference.

Convenience

Solar blankets require daily setup and removal. While they work well to block debris from entering your pool, the on-and-off process can be wet and messy. Liquid pool covers only need to be measured and quickly added to your pool water. However, you’ll need to keep track of each application and keep a regular weekly or monthly schedule in order to maintain its effectiveness.

Versatility

Liquid pool covers go where some solar blankets can’t reach. You can use a liquid pool cover on irregularly shaped pools and those that have spillovers or waterfalls.

Pool Compatibility

Solar blankets have the advantage of not disturbing chemical balances and do not interfere with filtration systems. If you’re buying a liquid pool cover, be sure to check whether it’s compatible with your pool’s equipment.

Efficiency

A solar blanket may have the edge in effectiveness when it’s in place, but liquid pool covers work constantly throughout the day and the night. While wind and swimming activity can disturb the coverage, a liquid pool cover can quickly re-establish itself across the water’s surface, providing more hours of water evaporation prevention.

Safety Concerns

Solar blankets pose a risk for possible entrapment. Liquid solar covers have been found to be safe to use for all swimmers and pets. Be sure to buy a high-quality product for optimal safety. The best liquid pool covers are non-toxic, biodegradable, and friendly to the environment.

In Conclusion

We selected Natural Chemistry 7100 Cover Free Liquid Pool Cover as our top pick for the best overall product on our list. Natural Chemistry uses advanced mono-layer technology to deliver results, including an 85% decrease in water evaporation and a 70% reduction in heat loss. This liquid pool cover is highly effective due to its excellent surface tension that keeps it in place and working. This product is safe to use immediately after application and is pH neutral.

For the best value, we recommend Tropical Fish Liquid Solar Blanket. This product is able to reduce water evaporation by half its regular rate. Biodegradable, environmentally friendly, and non-toxic, Tropical Fish Liquid Solar Blanket is safe for all swimmers and pets, is compatible with all filtration systems and pool liners, and does not affect your pool’s original chemical balance

LO-CHLOR Aqua Blanket is our premium choice for its effectiveness in decreasing evaporation and improving pool temperatures. This liquid pool cover provides a thin, undetectable layer of protection that conserves water and reduces chemical use. LO-CHLOR Aqua Blanket is compatible with all filtration methods and pool liners and is safe to use.

Hopefully, our informative reviews and useful buyer’s guide have helped you find the best liquid pool cover to try in your pool. These covers can be a convenient alternative to plastic solar covers. With the right liquid pool cover, you may be able to enjoy your pool longer and save money from replacing water and chemicals.