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Description
The Harvest Company pH Control Kit 1.4 oz. Organic Nutrient Solution Crystal Concentrate Application Type Tester and Adjuster (VPTK4)The Harvest Company Complete pH Testing and Adjusting Kit Easy to Use pH Testing and Adjustment Solution for Healthy Plant Growth The Harvest Company Complete pH Testing and Adjusting Kit provides everything needed to monitor and adjust the pH of nutrient solutions, reservoirs, and fertilizer mixes. This convenient kit includes a pH test kit along with crystal pH Up and crystal pH Down for accurate pH management across a variety of growing systems.
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4.4 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Foldable Design Works Great and Dog Goes Crazy for It
This ball launcher has become an instant hit in our household. The moment I pick it up, my dog is at the door wagging with excitement, which says everything about how much fun this toy brings to playtime.
The foldable design works smoothly with a simple push button mechanism at the joint. Press the button and flick your wrist to extend it, or unfold it by hand if you prefer. When folding it back, it snaps securely into place. The mechanism feels solid and I expect it to hold up well with regular use. The only way I could see damaging it would be accidentally overextending it when locked open, but with normal handling it seems built to last.
At 25 inches extended, this launcher gives serious throwing distance compared to what I can achieve by hand. The grip is extremely comfortable, genuinely reminiscent of a tennis racket handle with its soft, non-slip texture. Even during longer play sessions, my hand never gets tired or uncomfortable. The ball pickup feature works well too. With the 25-inch length, I do need to bend my knees slightly into a small squat for best results, but it beats bending all the way down and dealing with slobbery tennis balls by hand.
The included 2.5-inch ball is smaller than a standard tennis ball, which actually makes this suitable for a wider range of dogs, including smaller breeds, not just medium and large dogs. I tested it with other 2.5-inch balls I had on hand and they worked just fine in the launcher. The ball stays secure during swinging and walking, so no worries about it falling out unexpectedly. The bright orange and blue colors make the ball easy to spot in grass or other outdoor settings.
The launcher arrives ready to use right out of the box. It's convenient for storage and travel when folded, and the overall construction feels durable enough for regular outdoor use. If you want to increase throwing distance, keep your hands clean, and make fetch more exciting for your dog, this is a solid choice that delivers on its promises.
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Reviewed in the United States on December 26, 2025
★★★★★ 3
Thrower is great, ball lasted an hour
The thrower is made of strong plastic. It is nicer than some of the others I have had because it can fold in half to store easier. There is a push button to open it and close it so it doesn’t collapse when using it. The ball cup has a slot in it which I feel helps the ball come out easier. The ball has a soft covering and while my dog didn’t chew the covering off, the ball inside cracked within an hour of her playing with it. Luckily, her other balls fit in the thrower.
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Reviewed in the United States on January 22, 2026
★★★★★ 5
Great!
This dog ball thrower is sturdy and easy to use, especially for longer throwing sessions. The length helps keep hands clean, and it launches balls smoothly without much effort. The foldable design makes it easier to store or bring along.
After plenty of use, it’s held up well and hasn’t cracked or loosened. Our German shepherd pups are LOVING the further distance throws! It’s made fetch easier on arms and shoulders, and it works reliably.
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Reviewed in the United States on January 15, 2026
★★★★★ 5
My dog is obsessed with this
My dog absolutely loves this ball launcher. The second it comes out he knows it is time to play and gets so excited. It makes throwing the ball much easier and sends it way farther than I can throw on my own, which is perfect for burning off energy at the park.
I really like that I do not have to pick up a slobbery ball with my hands. Scooping it up is quick and easy and keeps my hands clean. The handle is comfortable to hold and does not slip, even during longer play sessions.
The foldable design is a nice bonus and makes it easy to toss in the car or store when we are done. Overall this has been a big hit in our house and has made fetch even more fun for both of us.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Just like a regular Chuckit launcher but easily folds in half if needed
Our dog loves chasing balls! And, if we're out in the woods, he'll chase the ball and bring it back and say "throw it again"...again and again. Well, he doesn't actually "say:" anything, but he just loves to fetch and retrieve. With this ball launcher, it's easy to pick up the slimy ball and throw it. We have Chuckit launchers that are 27 inches and they are awesome. They are long enough that I don't even have to bend down to pick them up to throw again. With this item, it's 25 inches extended, but that's good enough. Same thing as the Chuckit launcher, but you can easily bend it in half if needed then open it up and lock it in place to have a reasonable facsimile of a regular launcher. It comes with a tennis ball-like ball. Get some Chuckit balls for it. Much better than tennis balls.
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Reviewed in the United States on December 16, 2025