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    • Water maintenance

    Water maintenance

    A swimming pool not only provides cooling & fun but also requires maintenance. 🏊
    A well cared for pool with clear water goes hand in hand with the right maintenance products.

    Measuring is knowing so use test strips to keep a close eye on the pool values (pH, chlorine & alkaline value). 
    That way you can safely enjoy a fresh splash! 

    Don't know where to start? Poolboy Marcel is already waiting with his best maintenance tips: 
    a summer-ready pool in 5 steps!

    90 products
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    Cristal-clear-1-L
    Promotion
    BSI Cristal Clear 1L - for crystal clear water in your spa or pool
    €17.50 €16.09
    -15%
    Langwerkend-chloor-1kg-grote-200gr-tabletten
    -15%
    BSI Long acting chlorine tablets 1kg - large tablets of 200g
    €16.50 €14.05
    pH-up-liquid-1-L
    BSI pH Up liquid 1L - increases the pH level of your pool or spa
    €4.95
    -23%
    Aqua-pur-5-in-1
    -23%
    BSI Aqua Pur 5-in-1 - for crystal clear and soft pool water
    €23.50 €18.17
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    -17%
    Langwerkend-chloor-1kg-kleine-20gr-tabletjes
    -17%
    BSI Long acting chlorine tablets 1kg - small tablets of 20g
    €18.50 €15.33
    Chloorvlotter-dispenser-voor-kleine-20gr-chloortabletten-of-mini-tabs-van-2-7gr
    Intex PureSpa chlorine float for small chlorine tablets (20g or 2.7g)
    €1.99
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    Promotion
    pH-up-liquid-5-L
    Promotion
    BSI pH Up liquid 5L - increases the pH level of your pool or spa
    €13.95 €13.31
    Promotion
    Anti-Groen-Alg-1-l-zwembad-n-
    Promotion
    BSI Turbo Green & Alga 1L - fights algae & green pool water
    €23.95 €22.93
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    Promotion
    pH-down-liquid-5-L
    Promotion
    BSI pH Down liquid 5L - lowers the pH level of your pool or spa
    €13.95 €13.10
    -18%
    pH-up-poeder-2-5-kg
    -18%
    BSI pH Up 2.5kg (powder) - raises the pH level of your pool or spa
    €14.50 €11.84
    -22%
    Cristal-clear-5-L
    -22%
    BSI Cristal Clear 5L - for a crystal clear pool or spa
    €68.95 €53.46
    -78%
    Test-kit
    -78%
    Stock clearance
    BSI Test Kit - measure the chlorine and pH levels of your pool
    From €3.99 €2.13
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    Promotion
    Anti-Groen-Alg-300-ml-zwembad-n-
    Promotion
    BSI Turbo Green & Alga 300ml - fights algae & green pool water
    €12.95 €12.50
    -20%
    Micro-floc-5-L
    -20%
    BSI Micro Floc 5L - liquid flocculant for a clean pool
    €29.95 €23.99
    -19%
    Langwerkend-chloor-5kg-grote-200gr-tabletten-Eur-O-tabs
    -19%
    BSI Eur-O-tabs Long acting chlorine tablets 5kg - large tablets of 200g
    €58.95 €47.78
    -17%
    Oxy-pool-spa-1-kg
    -17%
    BSI Oxy Pool & Spa 1kg (granules) - reduces chlorine use by up to 50%
    €27.50 €22.73
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    Vlotter-met-Thermometer
    BSI chlorine float with thermometer - for gote chlorine tablets of 200g
    €8.50
    -15%
    Oxy-pool-spa-2-5-kg
    -15%
    BSI Oxy Pool & Spa 2.5kg (granules) - reduces chlorine use by up to 50%
    €49.95 €42.61
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    -13%
    Snelwerkend-chloor-1-kg-granulaat
    -13%
    BSI Fast-acting Chlorine 1kg (granules)
    €16.50 €14.35
    -24%
    Alkalinity-up-5-kg
    -24%
    BSI Alkanity Up 5kg (soluble powder)
    €26.95 €20.50
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    -20%
    Snel-helder-set
    -20%
    BSI Quick Clear Set - away with green pool water!
    €57.95 €46.53
    Mini-Pool-1-Kg
    BSI Mini Pool 1kg - chlorine-free maintenance product for children's pool
    €11.95
    -12%
    Filter-cleaner-5-L
    -12%
    BSI Filter Cleaner 5L - cleans the cartridge filter
    €25.50 €22.50
    -17%
    Test-strips-50-strips
    -17%
    BSI Test Strips - 5-in-1 - 50 pieces
    €15.95 €13.21
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    pH-down-liquid-1-L
    BSI pH Down liquid 1L - lowers the pH level of your pool or spa
    €4.95
    -65%
    Mini-pool-1-kg
    End series product
    -65%
    BSI Mini Pool Net 1kg - chlorine-free maintenance product for children's pool
    From €5.99 €4.19
    -18%
    Floc-socks-8x125-gr
    -18%
    BSI Floc Socks - 8x125g - flocculation sock for skimmer
    €19.95 €16.36
    spa-chloorgranulaat-1kg
    Famiflora Fast - snelwerkend chloorgranulaat 1kg
    €9.50
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop
    ph-down-poeder-3kg
    Famiflora pH-minus poeder 3kg - verlaagt de pH-waarde van je zwembad of spa!
    €8.50
    ph-up-poeder-3kg
    Famiflora pH-plus poeder 3kg - verhoogt de pH-waarde van je zwembad of spa!
    €9.99
    Free delivery from € 40
    Tailored advice from our experts
    The sustainable & ecological webshop