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Description
Dolomite Substrate 1-3mmGrain size: 1 3mm. stabilises pH and hardens the water perfect for rock biotopes: Tanganyika, Malwai, Lake Victoria giving an alkaline reaction. The fish that inhabit these lakes do not live in the ooze (up to 0. 5mm) but in the sand 0. 5< 3mm which also allows the gills to be cleaned. At the bottom of the page, there is a calculator that allows you to calculate the appropriate amount of substrate. 100% NATURAL. Every owner of underwater pets knows
Grain size: 1-3mm. -stabilises pH and hardens the water -perfect for rock biotopes: Tanganyika, Malwai, Lake Victoria -giving an alkaline reaction. The fish that inhabit these lakes do not live in the ooze (up to 0.5mm) but in the sand 0.5< 3mm which also allows the gills to be cleaned.
At the bottom of the page, there is a calculator that allows you to calculate the appropriate amount of substrate.
100% NATURAL. Every owner of underwater pets knows that decorations and aquarium substrates not only look nice, but also affect the environment of our fish. That is why it should be ensured that most of them are natural. Not artificially coloured and looks natural.
Some of the used sands have very little influence on the chemical values of water. It is therefore advisable to use such materials for the substrate of Tanganyika aquarium which would have a high content of magnesium reacting with our water. Such rocks include DOLOMITES.Metasomatic dolomites were formed in the process of metasomatic transformation of limestone (calcite) deposits. In this process, the calcium carbonate they contained was partially displaced by magnesium carbonate. The source of magnesium in these transformations was sea water.
Before use, we recommend that you only pre-wash the substrate, please do not do this thoroughly because it is a never-ending work. After pouring out the substrate into the aquarium and covering it with water, a natural cloudiness may occur, which will disappear very quickly after starting the filtration.
Please note that the total weigh of a bags may vary +/- 2%
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4.4 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 1
Ball Launcher Poorly Made and Hard To Use, Save Your Money
This launcher was too long and thin to pick up the ball from the ground, I had to use my other hand to press down on it. The screw on handle was heavy and kept coming loose no matter how tight I made it, strain on the wrist to use. The ball holder end would often not let go of the ball when trying to launch it. I ended up putting it in the trash. I had two shorter Chuckit launchers that are much better made, will stick with them. I don't recommend this to anyone, save your money.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Go Get It!
GoSports does it again.
Our family has a lot of GoSports products. It brings us comfort knowing when we order a product from them the quality is going to be great.
The Ball Launcher is excellent. Our lab loves the soft tennis balls that come with it, preferring them over the harder rubber ones from other brands.
The launcher itself is thoughtfully designed, well-made, and comfortable to hold.
Our new go-to for daily fetch sessions.
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Reviewed in the United States on November 15, 2025
★★★★★ 2
Gave it a Try
I have always used the Chuck It ball and ball launcher. I thought I would try this since the price was better. There is definitely a reason it is priced lower. The handle on this one twists on and constantly comes undone when you throw, and it does not launch nearly as well. I would not order this product again.
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Reviewed in the United States on May 26, 2026
★★★★★ 4
A few usability issues
My dog is obsessed with playing fetch. It’s part of our daily routine.
Pros
- I like that this comes with two launchers so we can keep one at home and one in the car.
- Build feels solid
Cons
- The cup is slightly too small for regular sized tennis balls. I buy the large Costco box of Penn tennis balls every couple of years for my dog. If you fully seat the ball in the cup/launching end, it’s extremely difficult to throw and puts some strain on your wrist. — the workaround is to only partially insert the ball when picking it up.
- Like others have stated, the launcher does come unscrewed occasionally after a few throws. It’s kind of annoying so I’ll likely try some thread lock, but ideally that wouldn’t be necessary.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Fun!!!
I can’t say enough good things about this tennis ball launcher! Roxy absolutely loves it. Every time I pick it up, her tail goes crazy with excitement. It’s so easy on my arm, and I love that it gives her a great way to burn off energy. The launcher is sturdy, well-made, and works like a charm. If you have a high-energy pup like Roxy, this is a must-have!
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Reviewed in the United States on May 21, 2026