KOI POND WATERPROOFING HYDRO STOP WATER LEAK 1kg
R299.99
Instant 60-Second Active Plug: Rapidly reacts upon contact with water, setting solid within 1 to 2 minutes to choke off high-velocity water streams and weeping cracks.
Positive Expansion Seal: Designed to expand slightly as it cures, tightly wedging itself deep inside the concrete fissure to form a permanent mechanical lock against intense hydrostatic pressure.
Versatile Powder or Putty Application: Can be mixed with clean water into a thick putty to pack out holes, or applied directly as a dry powder forced straight into active, flowing leaks.
Fish & Bio-Safe Compound: Safe for delicate aquatic life once hardened, making it ideal for structural repairs in Koi ponds, breeding facilities, and dams.
Airtight Pipe & Conduit Sealing: Provides an impermeable hydraulic gasket when packed around PVC pipes, filtration conduits, lighting niches, and structural wall ducts.
Guaranteed Safe Checkout

KOI POND WATERPROOFING HYDRO STOP WATER LEAK 1kg
Hydro Stop is cementitious powder combined with acceleration chemicals to produce an instant setting repair compound to stop flowing water within 1-2 minutes in concrete structures ie
Swimming Pools
Ponds
Reservoirs
Tunnels
Cellars
Underground Garages
Seals around pipes, conduits and ducts
Use in a dry powder form or putty by adding water
- Stop soaking water caused by water pessure
- Stop flowing water through holes and cracks in concrete and masonry surfaces
- Seals around pipes, conduits and ducts
- Areas of application are reservoirs, dams, tunnels cellars, underground garages, etc.
- Koi / Fishponds and Swimming Pools Advantages
- Easy to use – addition of water only or applied to surface in powder form
- Sets quickly within 1-2 minutes
- Expands on setting Non-Staining Durable
- Frost and de-icing salt resistant
directions for use
- HYDROSTOP is a very fast setting material, and all preparatory work must be completed before mixing is commenced.
- The surface must be firm, clean absorbent and free of dust or plaster.
- Do not mix more product than can be placed within two minutes
- Wet surface to be treated before application.
- Add clean water to a small amount of HYRDOSTOP and mix to the consistency of putty.
- Tool material into the prepared opening and hold firmly in place until product has hardened.
- Stop flowing water by forcing dry powder into cracks and hold firmly in place until product has hardened.
- Repeat if Necessary
watch points
- Avoid contact with skin
- Avoid contact with eyes
What’s in the box
1 x 1 Kg Hydrostop

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