Lo-Chlor is Australia's most trusted specialist pool and spa chemical manufacturer globally recognised and exporting to 25+ countries. Their range covers algaecides, clarifiers, phosphate removers, stain treatments, stabilisers, spa care, equipment aids and more, every product formulated for Australian water chemistry and climate.
Lo-Chlor Pond & Fountain Algaecide is a specialist formula designed for ponds, water features and ornamental fountains — controlling and eliminating all types of algae while being safe for fish, aquatic plants and the surrounding garden environment.
Standard pool algaecides are not suitable for ponds — they're too concentrated and not formulated for aquatic life compatibility. Pond & Fountain Algaecide uses a unique copper complex specifically calibrated for pond environments, effective in both flowing and stagnant water and safe for use where fish and aquatic plants are present.
Lo-Chlor Pond & Fountain Algaecide details
Specifically formulated for ponds, fountains and water features
Safe to use where fish and aquatic plants are present
Controls and eliminates all algae types including string algae
Effective in both flowing and stagnant water
Also improves water clarity as a secondary benefit
Available in three sizes: 500ml, 5L and 20L
Choosing your size: The 500ml is ideal for small ornamental ponds and fountain features. The 5L suits medium to large ponds or properties with multiple water features. The 20L is for large ornamental lakes, commercial water features or professional landscapers.
For pool use, switch to Lo-Chlor Pool Algaecide or Lo-Chlor Tropiclear — they're formulated and priced for pool volumes. Pond & Fountain Algaecide is specifically calibrated for pond environments and should not be used as a pool algaecide substitute.
🔍 Does it suit my environment?▾
Pond & Fountain Algaecide is designed for pond and water feature environments.
🐟Fish present▾
✓ Safe — formulated for fish-bearing ponds
This product is safe to use in ponds containing fish when used at the recommended dose. Do not overdose — always calculate water volume carefully and apply the correct amount.
🌿Aquatic plants present▾
✓ Safe at recommended doses
Safe for aquatic plants and waterside vegetation at recommended doses. Monitor sensitive plants after first application.
💧Flowing water (fountains)▾
✓ Compatible — effective in flowing water
Equally effective in moving water. For fountains with recirculating pumps, add via the water inlet for even distribution.
🪷Stagnant ponds▾
✓ Compatible — effective in stagnant water
Formulated to work in both stagnant and flowing water environments.
🌊Swimming pool▾
✗ Not for pool use — use pool-specific algaecides
This product is not formulated for swimming pools. For pool algae treatment, use Lo-Chlor Pool Algaecide or Tropiclear.
🐢Wildlife ponds▾
⚠ Use with care — check wildlife compatibility
Safe for fish at recommended doses, but use with care in ponds with amphibians or other sensitive wildlife. Start with the minimum dose and monitor.
💊 Dosage guide▾
Calculate water volume carefully (length × width × average depth × 1,000 = litres). Overdosing can stress fish.
Preventative maintenance
2.5 ml
per 1,000 L
Monthly maintenance dose for clear water. Apply evenly across the pond surface with the pump running.
Active algae treatment
5 ml
per 1,000 L
Standard treatment dose for visible algae. May require repeat treatment after 7 days for stubborn algae.
String algae (heavy)
10 ml
per 1,000 L
Higher dose for string algae or heavy infestations. Remove physical algae matter first where possible.
Large water feature
Use 5L or 20L
Scale dose per 1,000L to feature volume. The 5L and 20L are more economical for regular treatment of larger ponds.
❓ FAQ▾
How is this different from standard pool algaecide?▾
Standard pool algaecides are formulated for high-volume pool water and would be harmful to fish and sensitive aquatic life at pool concentrations. Pond & Fountain Algaecide uses a specially calibrated copper complex at concentrations safe for aquatic environments, while still being effective against all algae types.
My fish are at the surface after I added it. What should I do?▾
If fish are showing stress after application, immediately add fresh water to dilute the concentration and increase aeration. Ensure you applied the correct dose for your pond volume — overdosing is the most common cause of fish stress. Remove any dead algae promptly as it consumes oxygen as it decomposes.
Can I use it in a fountain without fish?▾
Yes — the product is equally effective in fish-free ornamental fountains. You can use the standard treatment dose without the fish-safety concern.
How often should I treat?▾
Monthly preventative dosing during warm months (Oct–Apr) keeps algae at bay. In cooler months, dosing every 6–8 weeks is typically sufficient. After a heavy algae outbreak, treat at the higher dose then return to monthly maintenance.