D'Martinez Academy
🏆 40 lessons · Complete training

Learn to really take care of your pool

Welcome! Here you'll learn, calmly and without unnecessary jargon, everything you really need to know to look after a pool, from the basics through to the regulations that affect communities. And if a question ever comes up that the quiz doesn't answer, don't worry: we're here, just write to us and we'll sort it out.

40 lessons across 4 levels, with a quiz at the end of each one. Finish them all and you can download your diploma. Everything already written on our blog, now organised as a learning path.

Water in good hands.

Summary video (7 min) on water parameters, a good starting point before lesson 1.

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This diploma certifies completion of the D'Martinez Academy lessons. It is not an official qualification and does not replace, under any circumstances, the professional pool technician certificate.

1

Level 1: Fundamentals

The essentials for understanding what's going on with your water

Water parameters: full guide
Read guide
How to raise or lower the pH
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What PPM means
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What the chlorine % means
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Robotic cleaner vs. manual cleaning
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The pool pump: how it works
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Maintenance calendar: daily, weekly, monthly
Read guide
2

Level 2: Common problems

How to recognise and fix what comes up most often

Green water: why it happens and what to do
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Black algae: why it resists treatment
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Stains in the pool
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Foam in the pool
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Chlorine smell: what it means
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Cloudy or brown water: why it happens
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Water leaks: how to detect them
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The most common maintenance mistakes
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3

Level 3: Advanced chemistry

For anyone who wants to really understand the water

Langelier Index
Read guide
Calcium hardness
Read guide
Cyanuric acid (stabiliser)
Read guide
Salt chlorination
Read guide
Salt chlorinator cell
Read guide
Filter sand change
Read guide
Chemical water treatment
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Filter types: comparison
Read guide
Filter selector valve
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Filter backwash: when and how
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Redox probe and pH probe: what each one is for
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Glass mosaic, liner or polyester: which finish to choose
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Skimmer pool or overflow pool: the real differences
Read guide
4

Level 4: Regulations, seasons and safety

Everything around water maintenance: the law, the calendar and safety

Mandatory professional certificate 2027
Read guide
How to open the pool in spring
Read guide
How to winterise the pool
Read guide
A safe pool for the family
Read guide
RD 742/2013 regulations for communities
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Safe storage of chemical products
Read guide
Decreto 99/2024 of the Comunidad de Madrid
Read guide
Thermal cover: what it's really for
Read guide
Health risks of a poorly maintained pool
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Heat pump: how much it extends the season
Read guide
Dosing pumps: automatic dosing
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Documentation to open the pool every year
Read guide

Toolbox

Printable cheat sheets to always keep at hand

Ideal parameters tablePDF · to stick up next to the pool control panel
Monthly maintenance checklistPDF · to print and tick off each month
Before you start

Complete maintenance guide
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Leave us your email and download the complete guide right now: parameters per Comunidad de Madrid regulations, maintenance calendar, common problems, installation equipment and much more. No spam, just the guide.

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