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Pool Chemicals

At 1st-Direct you will find a wide range of swimming pool chemicals that will ensure your pool water remains sparkling clean and clear throughout the year. If you are unfamiliar with adding pool chemicals please see our pool chemicals guide which will tell you what chemicals you need to add to your pool. On all our chemicals there will be clear dosage instructions to follow but if you have any questions please contact us.

We have pool chlorine/bromine to sanitise your pool water and kill bacteria/algae in your pool. To control the pH level in your pool we have a range of water balancers to ensure your pool chemistry is always at the correct level to make the chlorine work effectively and to safe guard against any damage to your pool pump/heating units. To keep algae from forming in your pool we have a range of different pool algaecides, and if you are looking for speciality chemicals such as tile & liner cleaner we have these too.

Relax Energize Sachets

Relax Energize Sachets

RRP: £2.70

Our Price: £1.95

You Save: £0.75

28% Off

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Relax Energize Sachets
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30g Relax Energize Sachets

£2.70

28%

£1.95

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300g Relax Energize Sachets

£6.72

27%

£4.90

In Stock
30 x 30g Relax Energize Sachets

£81.00

31%

£55.50

In Stock
20 x 300g Relax Energize Sachets

£134.40

33%

£90.00

In Stock
Relax Shock Granules

Relax Shock Granules

RRP: £7.80

Our Price: £3.95

You Save: £3.85

49% Off

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Relax Shock Granules
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490gm Relax Shock Granules

£7.80

49%

£3.95

In Stock
5 x 490gm Relax Granular Shock Chlorine (£3.79 each)

£39.00

51%

£19.25

In Stock
10 x 490gm Relax Granular Shock Chlorine (£3.50 each)

£78.00

53%

£36.50

In Stock
Relax Energize Sachets

Relax Energize Sachets

RRP: £2.70

Our Price: £1.95

You Save: £0.75

28% Off

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Relax Energize Sachets
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30g Relax Energize Sachets

£2.70

28%

£1.95

In Stock
300g Relax Energize Sachets

£6.72

27%

£4.90

In Stock
30 x 30g Relax Energize Sachets

£81.00

31%

£55.50

In Stock
20 x 300g Relax Energize Sachets

£134.40

33%

£90.00

In Stock
1kg pH Plus / Alkali / Soda Ash

1kg pH Plus / Alkali / Soda Ash

RRP: £9.42

Our Price: £4.50

You Save: £4.92

52% Off

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1kg pH Plus / Alkali / Soda Ash
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1kg pH Plus

£9.42

52%

£4.50

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6 x 1kg pH Plus

£56.52

61%

£22.00

In Stock
Relax Shock Granules

Relax Shock Granules

RRP: £7.80

Our Price: £3.95

You Save: £3.85

49% Off

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Relax Shock Granules
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490gm Relax Shock Granules

£7.80

49%

£3.95

In Stock
5 x 490gm Relax Granular Shock Chlorine (£3.79 each)

£39.00

51%

£19.25

In Stock
10 x 490gm Relax Granular Shock Chlorine (£3.50 each)

£78.00

53%

£36.50

In Stock
1.5kg pH Minus  (Dry Acid)

1.5kg pH Minus (Dry Acid)

RRP: £10.32

Our Price: £4.99

You Save: £5.33

52% Off

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1.5kg pH Minus  (Dry Acid)
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1.5kg pH Minus (Dry Acid)

£10.32

52%

£4.99

In Stock
6 x 1.5kg pH Minus (Dry Acid)

£61.92

55%

£28.00

In Stock
Granular Shock (De-reg) 2.5kg

Granular Shock (De-reg) 2.5kg

RRP: £31.50

Our Price: £15.00

You Save: £16.50

52% Off

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Granular Shock (De-reg) 2.5kg
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2.5kg Granular Shock (De-reg)

£31.50

52%

£15.00

In Stock
5kg Granular Shock (De-reg) (£12.50 per 2.5kg)

£63.00

60%

£25.00

In Stock
10kg Granular Shock (De-reg) (£11.25 per 2.5kg)

£126.00

64%

£45.00

In Stock
Stabilised Chlorine Granules

Stabilised Chlorine Granules

RRP: £14.52

Our Price: £5.20

You Save: £9.32

64% Off

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Stabilised Chlorine Granules
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1kg Spa Stabilised Chlorine Granules

£14.52

64%

£5.20

In Stock
2kg Stabilised Chlorine Granules

£24.00

60%

£9.50

In Stock
5kg Stabilised Chlorine Granules

£56.40

72%

£15.95

In Stock
6 x 1kg Stabilised Chlorine Granules

£87.12

65%

£30.50

In Stock
20kg (4 x 5kg) Stabilised Chlorine Granules (£15.50 per 5kg)

£225.60

73%

£62.00

In Stock
25kg Stabilised Chlorine Granules

£265.80

66%

£90.00

In Stock
4 x 75g Gel Cubes

4 x 75g Gel Cubes

RRP: £9.60

Our Price: £6.90

You Save: £2.70

28% Off

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4 x 75g Gel Cubes
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4 x 75g Gel Cubes

£9.60

28%

£6.90

In Stock
5 x 4 x 75g Gel Cubes

£48.00

29%

£34.00

In Stock
25 Packs of 4 x 75g Gel Cubes

£240.00

38%

£150.00

In Stock
Granular Floc

Granular Floc

RRP: £11.04

Our Price: £7.50

You Save: £3.54

32% Off

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Granular Floc
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2kg Granular Floc

£11.04

32%

£7.50

In Stock
6 x 2kg Granular Floc

£66.24

35%

£43.00

In Stock
200gm Chlorine Tabs

200gm Chlorine Tabs

RRP: £77.94

Our Price: £20.00

You Save: £57.94

74% Off

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200gm Chlorine Tabs
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5kg 200gm Chlorine Tabs

£77.94

74%

£20.00

In Stock
20kg (4 x 5kg) 200gm Chlorine Tabs (£19.50 per 5kg)

£311.76

75%

£78.00

In Stock
20kg 200gm Chlorine Tabs

£299.40

70%

£90.00

In Stock
Clear Tabs - Tube of 12 tablets

Clear Tabs - Tube of 12 tablets

RRP: £11.94

Our Price: £8.75

You Save: £3.19

27% Off

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Clear Tabs - Tube of 12 tablets
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Clear Tabs - Tube of 12 tablets

£11.94

27%

£8.75

In Stock
6 x Clear Tabs - tube of 12 tablets

£71.64

27%

£52.00

In Stock
12 x 12 Relax Clear Tabs

£143.28

30%

£100.00

In Stock
20gm Chlorine Tabs

20gm Chlorine Tabs

RRP: £20.88

Our Price: £9.25

You Save: £11.63

56% Off

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20gm Chlorine Tabs
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1kg 20gm Chlorine Tabs

£20.88

56%

£9.25

In Stock
2kg 20gm Chlorine Tabs

£34.80

60%

£13.95

In Stock
5kg 20gm Chlorine Tabs

£77.94

69%

£24.00

In Stock
4 x 5kg 20gm Chlorine Tabs (£22.50 per 5kg)

£311.76

71%

£90.00

In Stock
7kg pH Minus (Dry Acid)

7kg pH Minus (Dry Acid)

RRP: £23.88

Our Price: £8.85

You Save: £15.03

63% Off

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7kg pH Minus (Dry Acid)
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7kg pH Minus (Dry Acid)

£23.88

63%

£8.85

In Stock
2 x 7kg pH Minus (Dry Acid)

£47.77

63%

£17.50

In Stock
4 x 7kg pH Minus (Dry Acid)

£95.52

63%

£35.00

In Stock
25kg pH Minus (Dry Acid)

£71.40

44%

£40.00

In Stock
5kg pH Plus - Alkali (Soda Ash)

5kg pH Plus - Alkali (Soda Ash)

RRP: £21.30

Our Price: £8.95

You Save: £12.35

58% Off

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5kg pH Plus - Alkali (Soda Ash)
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5kg pH Plus

£21.30

58%

£8.95

In Stock
4 x 5kg pH Plus

£85.20

60%

£34.00

In Stock
25kg pH Plus

£66.24

40%

£40.00

In Stock
5kg Aqua Bromine Tablets

5kg Aqua Bromine Tablets

RRP: £96.00

Our Price: £31.00

You Save: £65.00

68% Off

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5kg Aqua Bromine Tablets
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5kg Aqua Bromine Tablets

£96.00

68%

£31.00

In Stock
4 x 5kg Aqua Bromine Tablets

£384.00

69%

£120.00

In Stock
Multifunctional Pool Tabs

Multifunctional Pool Tabs

RRP: £88.56

Our Price: £23.95

You Save: £64.61

73% Off

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Multifunctional Pool Tabs
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5kg Multifunctional Pool Tabs

£88.56

73%

£23.95

In Stock
20kg (4 x 5kg) Multifunctional Pool Tabs (£23.12 per 5kg)

£354.24

74%

£92.50

In Stock
1ltr Kleenpool Algaecide

1ltr Kleenpool Algaecide

RRP: £23.40

Our Price: £9.00

You Save: £14.40

62% Off

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1ltr Kleenpool Algaecide
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1ltr Kleenpool Algaecide

£23.40

62%

£9.00

In Stock
5 x 1ltr Kleenpool Algaecide (£8.00 each)

£117.00

66%

£40.00

In Stock
10 x 1ltr Kleenpool Algaecide (£7.00 each)

£234.00

70%

£70.00

In Stock
Filter And Cartridge Cleaner

Filter And Cartridge Cleaner

RRP: £21.37

Our Price: £9.95

You Save: £11.42

53% Off

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Filter And Cartridge Cleaner
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0.5lt Filter And Cartridge Cleaner

£11.29

£9.50

In Stock
1lt Filter And Cartridge Cleaner

£21.36

25%

£15.99

In Stock
6 x 0.5lt Filter And Cartridge Cleaner

£67.68

£55.00

In Stock
6 x 1lt Filter And Cartridge Cleaner

£128.16

30%

£90.00

In Stock
Large Animal Floating Chemical Dispenser

Large Animal Floating Chemical Dispenser

RRP: £23.99

Our Price: £10.50

You Save: £13.49

56% Off

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Large Animal Floating Chemical Dispenser
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Large Frog Floating Chemical Dispenser

£20.99

50%

£10.50

In Stock
Large Duck Floating Chemical Dispenser

£23.99

48%

£12.50

In Stock
Hardness Plus (Calcium Chloride)

Hardness Plus (Calcium Chloride)

RRP: £23.22

Our Price: £10.00

You Save: £13.22

57% Off

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Hardness Plus (Calcium Chloride)
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5kg Hardness Plus

£23.22

57%

£10.00

In Stock
25kg Hardness Plus

£92.88

60%

£37.50

In Stock
4 x 5kg Hardness Plus

£92.88

57%

£40.00

In Stock
Mini Floating Chemical Dispenser - 5"

Mini Floating Chemical Dispenser - 5"

RRP: £6.18

Our Price: £3.50

You Save: £2.68

43% Off

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Mini Floating Chemical Dispenser - 5"
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Mini Floating Chemical Dispenser - 5"

£6.18

43%

£3.50

In Stock
Mini Floating Chemical Dispenser - 5"

£6.18

43%

£3.50

In Stock
TA Plus (Sodium Bicarbonate)

TA Plus (Sodium Bicarbonate)

RRP: £22.32

Our Price: £10.00

You Save: £12.32

55% Off

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TA Plus (Sodium Bicarbonate)
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5kg TA Plus

£22.32

55%

£10.00

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4 x 5kg TA Plus

£89.28

57%

£38.00

In Stock
25kg TA Plus

£66.24

43%

£38.00

In Stock
Deluxe Large Chemical Dispenser

Deluxe Large Chemical Dispenser

RRP: £11.40

Our Price: £5.50

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Deluxe Large Chemical Dispenser
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Deluxe Large Chemical Dispenser

£11.40

52%

£5.50

In Stock
4 x 75g Gel Cubes

4 x 75g Gel Cubes

RRP: £9.60

Our Price: £6.90

You Save: £2.70

28% Off

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4 x 75g Gel Cubes
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4 x 75g Gel Cubes

£9.60

28%

£6.90

In Stock
5 x 4 x 75g Gel Cubes

£48.00

29%

£34.00

In Stock
25 Packs of 4 x 75g Gel Cubes

£240.00

38%

£150.00

In Stock

It is important to keep an eye on your water chemistry and chlorine levels throughout the swimming season to ensure the water is safe and clean for swimmers. We have a number of pool test kits which will give you an accurate reading of your chlorine and pH levels and you can add the appropriate chemicals to ensure your pool is always at the optimal levels. The pool chlorine level needs to be at 1-2 parts per million for indoor pools and 3 parts per million for outdoor pools. Our pool chlorine comes in both granular and tablet form. To add granular chlorine to your pool add them to a bucket of pool water and gently stir until dissolved, then evenly disperse the water over the pool. Chlorine tabs can be added to the skimmer basket and these will slowly dissolve.

To keep your pool from going green during the summer add long life algaecide to your pool, algae growth increases in sunlight so you may need to top your pool with algaecide throughout the swimming season.

Keeping the pH level is essential to ensure the pool chlorine works effectively and to prevent any internal metal workings in pumps/heating units corroding or scale forming. The pH level should be kept between 7.2 – 7.6 when using chlorine and this needs to be checked on a regularly basis. If the pH is higher than 7.6 add ph minus (dry acid), otherwise if it’s lower than 7.2 then add ph plus (alkali). Please read the dosage instructions to ensure you add the correct amount of chemicals and retest to ensure the pH level has changed.

It is important to never mix pool chemicals and keep them stored in their original and sealed containers in a cool dark place out of reach from children.

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