Water Blocks for In-Ground Swimming Pool Winter Covers

$69.99 - $129.99
(2 reviews)
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HydroTools Winter Pool Cover Water Blocks

Pool closing is a breeze with these Water Blocks for In Ground Pools. Simply fill and lay on your pool cover. The Water Blocks stack for easy storage.


  • Helps Keep Winter Cover In Place
  • Easy to Fill and Easy to Store


  • 36" Length x 8" Width x 4" Deep


  • 5
    The best of these on the market!

    Posted by Mark Cook on Nov 5th 2021

    I tried the ones found on Amazon and ebay. The reviews of those are accurate. Most of them showed up broken in the box. THESE are much more rugged and were in perfect shape. I have 6 from several years ago and they are still going strong. I'm glad I found the exact same ones this time.

  • 5
    Hydrotools winter pool cover water blocks

    Posted by Mike on Oct 9th 2021

    Anyone that's used the blue bags that you fill with water knows they don't last be and ate a pain to empty and store. That's even if they hold water after one use. These blocks are a God send compared to them. They work great and are easy to store