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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 — Algaecides
Tropiclear Pool Algaecide
🌡 Heated poolsTropical conditionsExtra strengthAll pool types
📋 How it works▾
Lo-Chlor Tropiclear was originally developed for Queensland tropical conditions and heated pools — environments where algae growth is accelerated by warmth, humidity and extended swim seasons.
In warmer climates and heated pools, standard-strength algaecide dosing often falls short. Higher water temperatures speed up algae reproduction and reduce the effective lifespan of preventative treatments. Tropiclear's higher-concentration copper complex formula is engineered to keep pace with these conditions.
Lo-Chlor Tropiclear details
Higher-concentration formula than standard Lo-Chlor Pool Algaecide
Developed specifically for tropical climates and heated pool environments
Kills and controls both black and green algae
Compatible with all pool surfaces and sanitiser systems
Available in three sizes to suit your pool and usage: 2.5L, 5L and 20L
Particularly recommended for pools in QLD, NT and northern WA climates
Choosing your size: The 2.5L is ideal for residential pools as a seasonal supply. The 5L suits larger pools or pool owners who dose more frequently in warmer months. The 20L drum is for commercial pools, service professionals, or properties with multiple pools.
If your pool runs cool or is unheated, Lo-Chlor Pool Algaecide is more economical for standard conditions. For a severe green pool outbreak in warm conditions, step up to Lo-Chlor Algae Knock-Out for emergency-strength treatment. If phosphates are fuelling repeated algae growth, add Lo-Chlor Starver X to remove the food source.
🔍 Does it suit my pool?▾
Tropiclear suits most pools. Select yours for specific guidance.
🧂Salt chlorinated▾
✓ Compatible — recommended for salt pools
Tropiclear is fully compatible with salt chlorinators. Add separately from chlorine shock with the pump running. Allow at least 2 hours between chlorine and algaecide additions.
💧Traditional chlorine▾
✓ Compatible — most common use case
Tropiclear works with all chlorine systems. Monthly dosing alongside your chlorine routine provides continuous background protection against black and green algae.
🪨Mineral / magnesium▾
✓ Compatible — works with all mineral systems
Tropiclear is safe for all mineral and magnesium pool systems. It works independently of your sanitiser chemistry and does not affect mineral balance.
⚡Ionised / Nature2▾
⚠ Use with care — consider metal-free alternative
Tropiclear contains copper, which can interact with ionised systems that already introduce copper ions. Additional copper at low pH may cause staining. For ionised pools, Lo-Chlor Miraclear Metal-Free Algaecide is the correct choice — the world's first metal-free algaecide with a built-in clarifier.
🏊Fibreglass▾
✓ Compatible — safe for fibreglass
Tropiclear is safe for fibreglass at recommended doses. Ensure pH is in range (7.2–7.6) before adding.
🧱Concrete / pebblecrete▾
✓ Compatible — especially effective on black spot
Concrete and pebblecrete pools are prone to black spot algae, particularly in warmer climates. Tropiclear's copper complex targets black spot effectively — ideal for heated pebblecrete pools.
💊 Dosage guide▾
All doses are per 50,000L. Broadcast around pool edges with the pump running — never add to the skimmer box.
🌡 Standard heated pool
250 ml
per 50,000 L
Monthly preventative dose for heated pools running 26–30°C.
☀ Tropical / summer peak
350 ml
per 50,000 L
For pools in tropical regions or during peak summer. Higher algae pressure warrants a stronger dose.
🟢 Green algae treatment
500 ml
per 50,000 L
Shock dose for visible algae growth. Super-chlorinate first, brush, then apply.
⚫ Black spot (heated pool)
750 ml
per 50,000 L
Higher dose for black spot in warm-water pools. Brush vigorously before and after.
❓ FAQ▾
Why do heated pools need a stronger algaecide?▾
Algae reproduces faster in warmer water — the rate roughly doubles with every 10°C increase. Standard-dose algaecide that works in a 22°C pool may be insufficient in a heated pool at 30°C. Tropiclear's higher copper concentration provides the extra margin needed.
Can I use Tropiclear if my pool isn't heated?▾
Yes — it will work, just stronger than standard conditions typically require. If your pool is unheated and in a temperate climate, Lo-Chlor Pool Algaecide is more economical. Tropiclear is not harmful at standard doses — you'd simply be using a more concentrated product than needed.
My heated pool keeps going green. What's missing?▾
Warm water combined with elevated phosphates is the most common cause. Test your phosphate levels and treat with Lo-Chlor Starver X if above 300 ppb — removing the food source significantly improves how well Tropiclear and chlorine can hold the line.
Which size should I buy?▾
The 2.5L is the right starting point for most residential pools — it provides roughly 10 monthly treatments for a 50,000L pool at the standard dose. If your pool is large (above 75,000L) or you dose more frequently in summer, the 5L is more economical. The 20L is for commercial pools or service professionals.