BSI
BSI Winterproof winterizing treatment 5 litres (for 100,000 litres)
Our pick for inground pools
Pool maintenance anyone can understand.
Autumn and winterWinterize your pool before the first night frost
Once nights drop below 10 degrees, it is time. Two to three hours of work prevents frost damage to the pump, filter and pipes. You open a clear pool in March instead of a green one.
October checklist
What you need to close your pool
- Test the final balancepH 7.2 to 7.4 before you close
- Winter shock and winterizing treatment10 mg/l chlorine, then the winter treatment
- Drain the lines and plug themProtect the skimmer, seal the return jets
Explained step by step
Every job in clear steps, with the amounts included.
Made for your own pool
Advice for private owners who do their own maintenance.
Clear product picks
One pick per job, with the reason why and no price hype.
Topics
All articles →Everything about your pool, in five sections
Water quality
pH, chlorine, alkalinity and clear water.
20 articles
Maintenance
Cleaning, maintenance schedule and winterizing.
14 articles
Components
Pump, filter, plumbing and heat pump explained.
18 articles
Guides
Step by step: shocking, backwashing, adjusting pH.
7 articles
Products
Honest picks for robots, test kits and covers.
13 articlesE-book for pool owners (in Dutch)
The complete pool handbook (Dutch edition)
Clear water, a pool that simply works and no more doubt with every chemistry question. Everything you need to maintain your pool yourself, explained step by step in one handbook.
- Instant download after payment
- Dosing tables, checklists and water chemistry
- Written by an owner who maintains his own pool
View the e-book
€17.95
This e-book is written in Dutch. It is not translated; only this page is in English.
Seasonal checklist
See the step-by-step planFrom autumn to spring in four steps
Four moments, each with one clear job. Follow the links for the full explanation per step.
- September and October
Keep leaves out, balance the water
Empty the skimmer basket daily once the leaves start falling. Test pH, alkalinity and chlorine, because you only close a pool with balanced water. Aim for a pH between 7.2 and 7.4 going into winter.
- October and Novembernow
Winterize and cover
Shock the water, lower the level to 20 to 30 cm below the skimmer and blow out the lines. Drain the pump and filter, then fit a tight cover. Plan on 2 to 3 hours of work.
- December to February
Check the cover and the equipment
Every 2 to 4 weeks, check that the cover is still tight and pump off rain or meltwater. After a frost, make sure the drain plugs are still in place. If you have a heat pump, check that its cover is secure and no leaves block the air intake.
- March
Open the pool
Take off the cover, put the equipment back together and start the pump. Test the water and shock it before anyone swims. With the right treatment the water is clear within 24 to 72 hours.
Our picks for closing the pool
Comfortpool
Comfortpool submersible pump 2-in-1 (drain pump and flat suction, 8,500 l/h)
Our pick for water on the cover
Kärcher
Kärcher WD 3 V-17/4/20 wet and dry vacuum (with blower function)
For blowing out lines
Unbranded
Winter plugs for pool lines (set of 5, 1.5 inch, PVC)
After blowing out the lines
Water-I.D.
Water-I.D. PoolLab 2.0 Digital Photometer (Complete Set)
Best premium choice for accurate multi-parameter testing
We do not show prices: they change daily, you see them at the shop.
Seasonal reading
All articles →Get ready for the winter shutdown
Winterizing your pool: complete closing checklist
Winterize your pool before the first frost: lower the water level, add winter chemicals, blow out the pipes and cover correctly. Full step-by-step …
Read more →
Best pool cover: solar, winter, and safety covers compared
Which pool cover is best? Compare solar bubble covers, winter tarps, and safety covers. Prices, energy savings, and sizing for round and rectangular …
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How to Choose a Pool Cover: Solar, Winter or Safety Cover?
Pool cover buying guide: compare solar covers, winter tarps and safety covers on heat retention, cost and ease of use for residential pools.
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Pool maintenance schedule: daily, weekly and seasonal (complete guide)
Complete pool maintenance schedule: daily, weekly and seasonal tasks. Monthly checklist for clear water and a long-lasting pool. Includes inground …
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Pool Consumables: What You Need Every Season
Complete guide to pool consumables per season: chlorine tablets, pH correction, filter cleaner, flocculant and winterizing kit. Includes a quantity …
Read more →
Opening your pool in spring: step-by-step guide
Open your pool correctly in spring: remove the cover, clean the filter, treat the water and balance the chemistry. Plan 1 to 2 weekends for the …
Read more →
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