Trichlor Tablets 20kg | 100 x 200g Pool Chlorine Tablets | Perfect Pools NZ
The ultimate bulk pool chlorine for large pools, commercial use, or stocking up for the full season. Trichlor Tablets 20kg gives you 100 x 200g slow-dissolving tablets - consistent, hands-off pool sanitization at the lowest cost per tablet in the range. Each tablet combines chlorine, algicide, and clarifier in a single slow-release formula that keeps your pool crystal clear with minimal effort.
Drop a tablet in your skimmer or floating dispenser and let it work - no daily dosing, no measuring, no fuss. At this pack size, you're covered for the entire NZ pool season and beyond.
Why Trichlor Tablets?
- 3-in-1 Formula - chlorine, algicide, and clarifier in every tablet
- Slow-Dissolving - each tablet lasts approximately 1-2 weeks, providing consistent chlorine release
- UV-Stabilized - Trichlor contains built-in cyanuric acid stabilizer to resist UV breakdown in NZ summer sun
- Hands-Off Maintenance - set and forget, ideal for busy pool owners
- Crystal Clear Results - algicide and clarifier keep water sparkling between shock doses
- 20kg Bulk Bucket - lowest cost per tablet in the range, ideal for large pools or commercial use
- FREE Nationwide Delivery - free shipping anywhere in NZ
Dosing Guide
- Use 1 tablet per 20,000L of pool water
- Replace every 1-2 weeks as the tablet dissolves
- Place in skimmer basket, in-line tablet dispenser, or floating dispenser
- Never place tablets directly on pool surfaces - can cause bleaching and damage
- Target chlorine level: 1-3 ppm for swimming pools
- Test weekly with test strips to confirm chlorine levels are maintained
Tip: Trichlor is slightly acidic - regular use will gradually lower your pool pH. Test weekly and use pH Increaser (Soda Ash) to maintain the ideal 7.2-7.6 range. Pair with Crystalline Chlorine (Dichlor) for shock dosing after heavy rain or high bather load.
How Long Will a 20kg Bucket Last?
- 20,000L pool (1 tablet/fortnight): 100 tablets = approximately 200 weeks - over 3 full seasons
- 40,000L pool (2 tablets/fortnight): 100 tablets = approximately 50 weeks - a full NZ pool season
- 80,000L pool (4 tablets/fortnight): 100 tablets = approximately 25 weeks - half a season
Available Sizes
- 5-Pack (1kg) - ideal for trying Trichlor or small pools
- 10-Pack (2kg) - great for smaller pools or seasonal use
- 20-Pack (4kg) - most popular for regular pool owners
- 50-Pack (10kg) - best value for large residential pools
- 100-Pack 20kg (this product) - lowest cost per tablet, ideal for large pools, commercial use, or stocking up
Trichlor vs Crystalline Chlorine - Which Do You Need?
- Trichlor Tablets - slow-dissolving, set-and-forget baseline chlorination. Best for ongoing maintenance.
- Crystalline Chlorine (Dichlor) - fast-dissolving, ideal for shock dosing. Best for top-ups and reactive treatment.
- Best practice: Use both - Trichlor for ongoing baseline, Dichlor for shock dosing when needed.
Use Alongside These Products
- Crystalline Chlorine 4kg - shock dose when chlorine drops or after heavy use
- 5-in-1 Test Strips - test chlorine, pH, alkalinity, and hardness weekly
- pH Increaser (Soda Ash) 4kg - Trichlor is slightly acidic, monitor and adjust pH regularly
- Alkalinity Increaser 4kg - stabilize Total Alkalinity for consistent chlorine performance
Safety & Storage
- Store in a cool, dry place away from direct sunlight and moisture
- Keep away from children and pets
- Never mix with other pool chemicals - Trichlor reacts violently with calcium hypochlorite and other oxidizers
- Always wash hands after handling
- Do not place tablets directly in pool water - always use a dispenser
Pickup & Delivery
📍 Perfect Pools Service Warehouse - 15C Douglas Alexander Parade, Albany
📅 Hours: Mon-Fri 9am-4pm | Sat 10am-2pm
🚚 FREE nationwide delivery - free shipping anywhere in NZ
📩 Questions? Email perfectpoolsnz@gmail.com or call 022 286 2881
❓ Frequently Asked Questions
Q: How long will a 20kg bucket last?
A: For a 40,000L pool using 2 tablets per fortnight, a 100-tablet bucket lasts approximately 50 weeks - a full NZ pool season. For a 20,000L pool using 1 tablet per fortnight, it lasts over 3 seasons.
Q: Can I use Trichlor tablets in a spa pool?
A: No - Trichlor tablets are not recommended for spa pools. The smaller water volume and higher temperatures cause cyanuric acid to build up rapidly, leading to over-stabilisation. Use Crystalline Chlorine (Dichlor) for spas instead.
Q: Why is my pH dropping after using Trichlor?
A: Trichlor is slightly acidic (pH approximately 2.8-3.5). Regular use will gradually lower your pool pH. Test weekly and use pH Increaser (Soda Ash) to maintain the ideal 7.2-7.6 range.
Q: Can I put tablets directly in the pool?
A: No - never place tablets directly on pool surfaces. The concentrated chlorine can bleach and damage vinyl liners, fibreglass, and concrete. Always use a skimmer basket, in-line dispenser, or floating dispenser.
Q: What is the difference between Trichlor and Dichlor?
A: Trichlor is slow-dissolving and ideal for ongoing baseline chlorination via a dispenser. Dichlor (Crystalline Chlorine) is fast-dissolving and ideal for shock dosing and spa use. Most pool owners benefit from using both.
Q: Is this suitable for commercial pools?
A: Yes - the 20kg bucket is our most popular size for commercial pools, holiday parks, and multi-pool operators. Contact us for volume pricing on larger orders.
Q: Do you offer free shipping?
A: Yes - free nationwide delivery on all orders. The 20kg bucket qualifies automatically.
🎯 You Might Also Need
- 5-in-1 Pool & Spa Test Strips - test chlorine and pH weekly when using Trichlor
- Crystalline Chlorine 4kg - shock dose alongside Trichlor for complete pool care
- pH Increaser (Soda Ash) 4kg - counteract Trichlor acidity and keep pH balanced
- Alkalinity Increaser 4kg - maintain Total Alkalinity for consistent results
