Fixing a crack


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Hi all
This spring when the night time water temp is in the 60s I'm going to drop my waterline about 5 feet and repair most of a crack that I think is losing water. I'll show step by step of the repair. Any input is welcome
 
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addy1

water gardener / gold fish and shubunkins
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When I had a pool in AZ I had a crack, used something, many years ago, that repaired a crack under the water. Maybe you could do that.
No clue on what I used. It worked.
 
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This looks like a commercial for flexseal. Flexseal for all your home-improvement needs is it cracked does it leak just flexseal it
 
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This looks like a commercial for flexseal. Flexseal for all your home-improvement needs is it cracked does it leak just flexseal it
I'm thinking on some kind of hydraulic cement. Interesting enough I fixed a hole the size of a half dollar in a swamp cooler with Flexseal. And it's still holding.
 
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Hydrolic would be the only masonry product i would look at, but i would lean toward a two part epoxy cut the crack open clean with muratic acid to etch the fresh cut and apply the epoxy
 
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Hydrolic would be the only masonry product i would look at, but i would lean toward a two part epoxy cut the crack open clean with muratic acid to etch the fresh cut and apply the epoxy
Yep I looked at those, kinda pricey and not planning on taking any fish/frogs/turtles out of pond. Any major repairs, Fish and Game has to be notified. I may use something that's injected in the crack.
 
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Yep I looked at those, kinda pricey and not planning on taking any fish/frogs/turtles out of pond. Any major repairs, Fish and Game has to be notified. I may use something that's injected in the crack.
woh wildlife fish and game?
 
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I don't see the lining? I would clean about six inches of the surface adjacent to the crack. A wire brush might work well for this. Clean inside the crack the best you can. Then apply Rapid Set Mortar Mix (available at Home Depot). Apply about 1/2 inch thick over the crack and then feather it in with a trowel or drywall spatula . Rapid Set is strong and doesn't shrink like Portland cement. I used it to seal the joints in a 10 ft deep cement block tank I made about ten years ago and it is still holding water.
 
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Yep I looked at those, kinda pricey and not planning on taking any fish/frogs/turtles out of pond. Any major repairs, Fish and Game has to be notified. I may use something that's injected in the crack.
What's this about fish and game need to be notified ?
 
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Because I raise Chiricahua Leopard frogs and there protected in Arizona. I can't remove or handle Leopard frogs without state approval.
[QUOTE="Tombstone, post: 422607,
 
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Because I raise Chiricahua Leopard frogs and there protected in Arizona. I can't remove or handle Leopard frogs without state approval.
[QUOTE="Tombstone, post: 422607,
ok so how exactly do you raise them if you can’t handle them?
 
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