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Internal Fresh Water Filters Boxes

Best selling

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  • All Pond Solution (200IF) Internal Box Filter Foams for 200L Aquarium

    All Pond Solution (200IF) Internal Box Filter Foams for 200L Aquarium

    (60)
    £7.99 New
  • Fluval A465 Underwater Filter

    Fluval A465 Underwater Filter

    (19)
    £26.20 New
  • Tétra C250/300 Box Filter

    Tétra C250/300 Box Filter

    (58)
    £7.50 New
  • Easy Crystal Water Fish Tank Filter by Tetra Carbon Replacement Cartridge 3 Pac

    Easy Crystal Water Fish Tank Filter by Tetra Carbon Replacement Cartridge 3 Pac

    (70)
  • Betta Choice internal aquarium fish tank filter F3 BCF MF723

    Betta Choice internal aquarium fish tank filter F3 BCF MF723

Top-rated

See all
  • Easy Crystal Water Fish Tank Filter by Tetra Carbon Replacement Cartridge 3 Pac

    Easy Crystal Water Fish Tank Filter by Tetra Carbon Replacement Cartridge 3 Pac

    (70)
    100% agree - Would recommend
  • Tétra C250/300 Box Filter

    Tétra C250/300 Box Filter

    (58)
    94% agree - Would recommend
    £7.50 New
  • Fluval A465 Underwater Filter

    Fluval A465 Underwater Filter

    (19)
    100% agree - Would recommend
    £26.20 New
  • All Pond Solution (200IF) Internal Box Filter Foams for 200L Aquarium

    All Pond Solution (200IF) Internal Box Filter Foams for 200L Aquarium

    (60)
    95% agree - Would recommend
    £7.99 New

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40 results

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  • Best match
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    • Type: Box Filter- Selected
    • Filter Location: Internal- Selected
    • Water Type: Fresh- Selected
    Clear All

    • 3 in 1 Aquarium Fish Tank Filter Internal Purifier Oxygen Pump Water Filtration - Image 1 of 4
    • 3 in 1 Aquarium Fish Tank Filter Internal Purifier Oxygen Pump Water Filtration - Image 2 of 4
    • 3 in 1 Aquarium Fish Tank Filter Internal Purifier Oxygen Pump Water Filtration - Image 3 of 4
    • 3 in 1 Aquarium Fish Tank Filter Internal Purifier Oxygen Pump Water Filtration - Image 4 of 4

    3 in 1 Aquarium Fish Tank Filter Internal Purifier Oxygen Pump Water Filtration

    Brand new · Unbranded
    £10.55 to £15.92
    (£15.92/Unit)
    Free postage
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    • Fish Tank Filter 3-in-1 Internal Aquarium Filtration 4W-35W Pump for Small Tanks - Image 1 of 4
    • Fish Tank Filter 3-in-1 Internal Aquarium Filtration 4W-35W Pump for Small Tanks - Image 2 of 4
    • Fish Tank Filter 3-in-1 Internal Aquarium Filtration 4W-35W Pump for Small Tanks - Image 3 of 4
    • Fish Tank Filter 3-in-1 Internal Aquarium Filtration 4W-35W Pump for Small Tanks - Image 4 of 4

    Fish Tank Filter 3-in-1 Internal Aquarium Filtration 4W-35W Pump for Small Tanks

    Brand new · Unbranded
    £12.96 to £28.32
    (£28.32/Unit)
    Free postage
    R⁣2⁣S⁣p⁣o⁣n⁣s⁣o⁣ ⁣B⁣r⁣е⁣d⁣U⁣⁣⁣⁣⁣⁣ ⁣0⁣⁣B⁣⁣⁣⁣ ⁣F⁣
    • Fish Aquarium Ultimate Tank Filter Tank Pump and Filter System for Filtration - Image 1 of 4
    • Fish Aquarium Ultimate Tank Filter Tank Pump and Filter System for Filtration - Image 2 of 4
    • Fish Aquarium Ultimate Tank Filter Tank Pump and Filter System for Filtration - Image 3 of 4
    • Fish Aquarium Ultimate Tank Filter Tank Pump and Filter System for Filtration - Image 4 of 4

    Fish Aquarium Ultimate Tank Filter Tank Pump and Filter System for Filtration

    Brand new · Unbranded
    £12.05 to £18.20
    (£18.20/Unit)
    Free postage
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  • Internal Aquarium Fish Tank Submersible Filter - All Pond Solutions IF Range - Image 1 of 1

    Internal Aquarium Fish Tank Submersible Filter - All Pond Solutions IF Range

    Brand new · All Pond Solutions
    (60)
    £6.59 to £18.99
    Free postage
    Click & Collect
    7,734 sold
    4⁣Ѕ⁣p⁣o⁣3⁣n⁣ ⁣s⁣0⁣R⁣o⁣r⁣ ⁣e⁣d⁣O⁣N⁣ ⁣⁣⁣C⁣⁣⁣J⁣⁣ ⁣B⁣H⁣
  • Fluval U1 Underwater Aquarium Filter 55 L (15 US Gal) Fish Tank Aquarium - Image 1 of 4

    Fluval U1 Underwater Aquarium Filter 55 L (15 US Gal) Fish Tank Aquarium

    Brand new · Fluval
    (19)
    £27.49
    Was: £39.99was - £39.99
    Free postage
    Click & Collect
    P⁣J⁣ ⁣M⁣4⁣ ⁣⁣9⁣0⁣ ⁣1⁣⁣B⁣ ⁣⁣X⁣⁣5⁣⁣ ⁣H⁣⁣⁣⁣ ⁣⁣⁣⁣
  • Fluval U1 Internal Filter U Series 55L Fresh Or Salt Water Brand New In Box - Image 1 of 4

    Fluval U1 Internal Filter U Series 55L Fresh Or Salt Water Brand New In Box

    Brand new · Fluval
    (19)
    £26.20
    Free postage
    Click & Collect
    Only 1 left.
    ⁣⁣⁣4⁣C⁣⁣ ⁣⁣⁣O⁣⁣K⁣ ⁣O⁣⁣O⁣⁣⁣ ⁣V⁣U⁣⁣⁣ ⁣I⁣⁣G⁣⁣
  • Hagen Super Jet Aquarium Internal Bubble Filter - Image 1 of 3

    New listingHagen Super Jet Aquarium Internal Bubble Filter

    Pre-owned · Hagen
    £1.75
    or Best Offer
    £2.94 P&P
    0 bids
    6d 13h
    2⁣H⁣⁣⁣ ⁣⁣O⁣⁣Z⁣ ⁣⁣⁣⁣⁣5⁣⁣⁣X⁣⁣⁣ ⁣P⁣R⁣⁣ ⁣⁣O⁣⁣
  • Boxed Eheim Pick Up Internal Filter 45 L - Image 1 of 4

    Boxed Eheim Pick Up Internal Filter 45 L

    Pre-owned · EHEIM
    £10.92
    £2.94 P&P
    Click & Collect
    0 bids
    5d 8h
    ⁣⁣J⁣⁣⁣C⁣⁣ ⁣W⁣S⁣⁣ ⁣R⁣H⁣ ⁣T⁣O⁣ ⁣⁣S⁣⁣⁣⁣⁣Y⁣⁣ ⁣⁣
  • Tetratec Easy Crystal Filter Pack C 250/300 Carbon Tetra Fish Tank Filter Media - Image 1 of 4

    Tetratec Easy Crystal Filter Pack C 250/300 Carbon Tetra Fish Tank Filter Media

    Brand new · Tétra
    (70)
    £10.38
    Free postage
    Click & Collect
    Only 3 left
    ⁣⁣⁣V⁣⁣8⁣ ⁣⁣G⁣⁣0⁣⁣⁣ ⁣⁣6⁣4⁣⁣⁣ ⁣9⁣8⁣⁣ ⁣S⁣⁣⁣⁣
  • aquarium internal filter - Image 1 of 1

    aquarium internal filter

    Brand new
    £16.32
    Free postage
    Click & Collect
    ⁣⁣Q⁣C⁣ ⁣K⁣N⁣ ⁣P⁣T⁣ ⁣1⁣0⁣ ⁣⁣8⁣⁣⁣H⁣⁣⁣⁣ ⁣⁣⁣⁣⁣⁣
  • Tetra Easy Crystal Filter Pack with Activated Carbon 250-300 - EasyCrystal Media - Image 1 of 2

    Tetra Easy Crystal Filter Pack with Activated Carbon 250-300 - EasyCrystal Media

    Brand new · Tétra
    (58)
    £8.52
    or Best Offer
    £2.94 P&P
    4⁣⁣⁣T⁣⁣⁣ ⁣⁣Q⁣⁣C⁣ ⁣⁣⁣Y⁣⁣B⁣ ⁣⁣8⁣⁣⁣⁣⁣O⁣ ⁣U⁣G⁣
  • 2 Interpet Replacement Impeller for the Internal Cartridge Filter CF1 - Image 1 of 4

    2 Interpet Replacement Impeller for the Internal Cartridge Filter CF1

    Brand new · Interpet
    £14.14
    Free postage
    Click & Collect
    D⁣⁣⁣R⁣ ⁣N⁣⁣⁣⁣T⁣⁣⁣ ⁣W⁣⁣⁣4⁣⁣⁣ ⁣⁣5⁣L⁣⁣⁣ ⁣X⁣⁣
  • Betta Choice BCF3 Internal Aquarium Filter - Image 1 of 3

    Betta Choice BCF3 Internal Aquarium Filter

    Brand new
    £16.99
    or Best Offer
    Free postage
    Click & Collect
    ⁣R⁣⁣F⁣⁣ ⁣⁣⁣⁣⁣⁣⁣Y⁣A⁣ ⁣6⁣⁣G⁣ ⁣⁣⁣E⁣H⁣⁣ ⁣U⁣L⁣ ⁣
  • All Pond Solutions Submersible Aquarium Fish Tank Internal Filter Purifier Pump - Image 1 of 4

    All Pond Solutions Submersible Aquarium Fish Tank Internal Filter Purifier Pump

    Brand new · Unbranded
    £13.15 to £27.74
    (£13.15/Unit)
    Free postage
    S⁣p⁣о⁣1⁣n⁣3⁣ ⁣s⁣o⁣5⁣r⁣e⁣d⁣⁣M⁣⁣ ⁣⁣⁣⁣K⁣P⁣ ⁣⁣I⁣⁣⁣⁣
  • Fish Aquarium Ultimate Tank Filter Tank Pump and Filter System for Filtration - Image 1 of 4

    Fish Aquarium Ultimate Tank Filter Tank Pump and Filter System for Filtration

    Brand new · Unbranded
    £13.15 to £27.74
    (£23.16/Unit)
    Free postage
    6⁣2⁣ ⁣O⁣S⁣0⁣p⁣o⁣n⁣ ⁣s⁣o⁣N⁣X⁣ ⁣L⁣O⁣ ⁣r⁣H⁣O⁣е⁣ ⁣d⁣⁣⁣⁣3⁣
  • Marina 360 Splash Carbon and Zeolite Aquarium Filter / Box Of 8x4=32 Units - Image 1 of 4

    Marina 360 Splash Carbon and Zeolite Aquarium Filter / Box Of 8x4=32 Units

    Brand new
    £32.00
    Free postage
    O⁣Ѕ⁣3⁣p⁣ ⁣H⁣C⁣ ⁣o⁣W⁣n⁣s⁣T⁣o⁣r⁣ ⁣Z⁣e⁣d⁣⁣0⁣⁣⁣ ⁣G⁣T⁣⁣⁣
  • Tetra Easy Crystal Filter Pack with Activated Carbon 250-300 - EasyCrystal Media - Image 1 of 3

    Tetra Easy Crystal Filter Pack with Activated Carbon 250-300 - EasyCrystal Media

    Brand new · Tétra
    (58)
    £11.12
    £3.49 P&P
    Click & Collect
    0⁣N⁣⁣ ⁣V⁣⁣⁣7⁣⁣⁣⁣ ⁣⁣S⁣B⁣⁣ ⁣⁣⁣⁣B⁣⁣0⁣⁣ ⁣⁣0⁣⁣
  • Aquarium Mini Corner Bubble Internal Filter, Box Filter, Bottom Filter - Image 1 of 4

    Aquarium Mini Corner Bubble Internal Filter, Box Filter, Bottom Filter

    Brand new
    £10.66
    or Best Offer
    £10.72 P&P
    8 watching
    3⁣⁣V⁣ ⁣⁣⁣⁣P⁣4⁣ ⁣⁣J⁣A⁣ ⁣⁣⁣⁣⁣⁣5⁣P⁣ ⁣⁣V⁣⁣⁣⁣I⁣
  • BIOPLUS THERMO 200 INTERNAL CORNER FILTER - Image 1 of 1

    BIOPLUS THERMO 200 INTERNAL CORNER FILTER

    Brand new · biOrb
    £102.19
    £14.84 P&P
    9 watching
    4⁣⁣⁣⁣W⁣⁣ ⁣⁣A⁣⁣⁣B⁣ ⁣W⁣X⁣⁣⁣⁣ ⁣M⁣D⁣ ⁣D⁣⁣1⁣⁣ ⁣J⁣
  • Aquarium Clear Bubble Internal Filter - Image 1 of 2

    Aquarium Clear Bubble Internal Filter

    Brand new
    £16.09
    £12.30 P&P
    48 sold
    ⁣T⁣V⁣⁣⁣⁣ ⁣S⁣⁣⁣W⁣ ⁣7⁣I⁣ ⁣V⁣⁣V⁣⁣ ⁣⁣⁣⁣⁣L⁣H⁣⁣ ⁣
  • All Pond Solution (200IF) Internal Box Filter Foams for 200L Aquarium - Image 1 of 4

    All Pond Solution (200IF) Internal Box Filter Foams for 200L Aquarium

    Brand new · All Pond Solutions
    (60)
    £18.40
    or Best Offer
    Free postage
    X⁣T⁣⁣⁣ ⁣⁣⁣⁣⁣4⁣⁣Q⁣ ⁣Z⁣⁣H⁣ ⁣⁣⁣⁣⁣R⁣⁣⁣P⁣⁣ ⁣⁣
  • BIOPLUS 100 INTERNAL CORNER FILTER - Image 1 of 1

    BIOPLUS 100 INTERNAL CORNER FILTER

    Brand new · biOrb
    £76.41
    £12.67 P&P
    ⁣⁣⁣7⁣A⁣ ⁣0⁣D⁣⁣ ⁣⁣M⁣N⁣ ⁣⁣⁣⁣U⁣R⁣⁣⁣⁣⁣ ⁣⁣⁣⁣⁣
  • Lee's Pet Products Quick & Easy® Corner Filter w/ Cartridge, Large - Image 1 of 2

    Lee's Pet Products Quick & Easy® Corner Filter w/ Cartridge, Large

    Brand new
    £13.28
    or Best Offer
    £12.21 P&P
    21 sold
    K⁣E⁣ ⁣⁣J⁣I⁣⁣ ⁣⁣9⁣K⁣⁣⁣⁣ ⁣⁣G⁣⁣W⁣ ⁣O⁣Z⁣⁣⁣ ⁣⁣⁣⁣
  • Oase BioPlus Thermo 100 Internal Aquarium Corner Filter with Heater - Image 1 of 2

    Oase BioPlus Thermo 100 Internal Aquarium Corner Filter with Heater

    Pre-owned
    £66.66
    or Best Offer
    £61.67 P&P
    3 watching
    ⁣⁣⁣T⁣O⁣⁣ ⁣L⁣⁣H⁣ ⁣⁣⁣U⁣4⁣ ⁣6⁣4⁣ ⁣⁣⁣⁣⁣⁣⁣J⁣I⁣ ⁣
  • TopFin CN-S Corner Filter - 3 Month Supply. 2 Boxes- - Image 1 of 1

    TopFin CN-S Corner Filter - 3 Month Supply. 2 Boxes-

    Brand new · Top Fin
    £29.56
    Was: £31.11was - £31.11
    or Best Offer
    £17.01 P&P
    ⁣⁣⁣⁣⁣⁣⁣⁣W⁣⁣⁣F⁣⁣ ⁣9⁣⁣⁣⁣⁣Z⁣ ⁣P⁣V⁣⁣ ⁣Z⁣1⁣⁣
  • Fluval A1470 Pre-Filter Mechanical Filtration - 1 BOX (26.45 oz / 750g) - Image 1 of 2

    Fluval A1470 Pre-Filter Mechanical Filtration - 1 BOX (26.45 oz / 750g)

    Brand new · Fluval
    £9.08
    £12.30 P&P
    ⁣⁣3⁣3⁣⁣ ⁣F⁣A⁣⁣ ⁣3⁣⁣8⁣⁣⁣⁣ ⁣O⁣⁣2⁣ ⁣I⁣Q⁣ ⁣⁣7⁣⁣⁣
  • TopFin CN-S 3 Corner Filter - 3 Month Supply. New - Slightly Damaged Box - Image 1 of 2

    TopFin CN-S 3 Corner Filter - 3 Month Supply. New - Slightly Damaged Box

    Box Design May Vary
    Brand new · Top Fin
    £7.99
    £16.86 P&P
    ⁣8⁣⁣⁣9⁣⁣⁣⁣ ⁣F⁣A⁣⁣⁣ ⁣⁣Z⁣⁣A⁣⁣⁣ ⁣⁣E⁣⁣H⁣ ⁣A⁣⁣
  • Top Fin CN-S Refill for CN10 Corner Filter 6 Count - Image 1 of 4

    Top Fin CN-S Refill for CN10 Corner Filter 6 Count

    Brand new · Top Fin
    £15.99
    Was: £17.77was - £17.77
    £21.81 P&P
    Only 1 left.
    ⁣C⁣K⁣ ⁣C⁣X⁣ ⁣⁣H⁣⁣⁣A⁣ ⁣H⁣⁣K⁣ ⁣⁣⁣⁣X⁣⁣H⁣ ⁣D⁣⁣⁣⁣
  • Lee's Pet Products Quick & Easy® Corner Filter Replacement Cartridge, Large - Image 1 of 1

    Lee's Pet Products Quick & Easy® Corner Filter Replacement Cartridge, Large

    Brand new
    £10.74
    or Best Offer
    £10.73 P&P
    U⁣L⁣S⁣p⁣o⁣ ⁣4⁣n⁣s⁣E⁣o⁣r⁣е⁣d⁣ ⁣⁣O⁣F⁣⁣⁣⁣ ⁣⁣8⁣1⁣ ⁣⁣⁣
  • Air Operated Small Corner Filter, Air Driven Bio Aquarium Fish Tank Filter - Image 1 of 1

    Air Operated Small Corner Filter, Air Driven Bio Aquarium Fish Tank Filter

    Brand new
    (13)
    £17.73
    £16.65 P&P
    Only 1 left.
    Q⁣M⁣ ⁣S⁣V⁣р⁣o⁣N⁣n⁣ ⁣s⁣o⁣0⁣2⁣ ⁣r⁣F⁣Y⁣ ⁣C⁣e⁣d⁣⁣⁣⁣U⁣ ⁣O⁣
  • Tetra Whisper Bio-Bag Cartridge Medium 3 pk brand New NWOT Aquarium Water Filter - Image 1 of 4

    Tetra Whisper Bio-Bag Cartridge Medium 3 pk brand New NWOT Aquarium Water Filter

    Brand new · Tétra
    £7.10
    or Best Offer
    £14.18 P&P
    S⁣0⁣p⁣L⁣ ⁣o⁣n⁣ѕ⁣T⁣E⁣o⁣ ⁣r⁣e⁣G⁣d⁣⁣9⁣⁣⁣ ⁣⁣⁣⁣⁣3⁣⁣4⁣
  • AquaClear 50-Gallon Ammonia Remover, 3-Pack - Image 1 of 1

    AquaClear 50-Gallon Ammonia Remover, 3-Pack

    Brand new · Aqua-Clear
    £13.68
    £12.44 P&P
    G⁣S⁣6⁣p⁣o⁣n⁣ ⁣O⁣ѕ⁣P⁣o⁣ ⁣r⁣e⁣E⁣d⁣⁣⁣⁣⁣6⁣⁣ ⁣6⁣C⁣ ⁣X⁣⁣
  • Easy Crystal Water Fish Tank Filter by Tetra Carbon Replacement Cartridge 3 Pac - Image 1 of 4

    Easy Crystal Water Fish Tank Filter by Tetra Carbon Replacement Cartridge 3 Pac

    Brand new · Tétra
    (70)
    £13.20
    or Best Offer
    £2.94 P&P
    Click & Collect
    ⁣V⁣⁣⁣3⁣⁣ ⁣⁣S⁣F⁣ ⁣⁣J⁣⁣⁣⁣⁣3⁣⁣ ⁣⁣8⁣I⁣⁣⁣ ⁣⁣⁣
  • Top Fin CN-S Refill for CN10 Corner Filter 6 Count - Image 1 of 1

    Top Fin CN-S Refill for CN10 Corner Filter 6 Count

    Brand new · Top Fin
    £19.56
    or Best Offer
    £12.61 P&P
    ⁣⁣T⁣C⁣ ⁣⁣0⁣⁣0⁣⁣ ⁣4⁣⁣⁣⁣G⁣⁣ ⁣P⁣⁣Y⁣ ⁣W⁣⁣0⁣⁣⁣⁣
  • BIOPLUS THERMO 100 INTERNAL CORNER FILTER - Image 1 of 1

    BIOPLUS THERMO 100 INTERNAL CORNER FILTER

    Brand new · biOrb
    £80.86
    £14.21 P&P
    5 watching
    A⁣D⁣ ⁣0⁣N⁣ ⁣9⁣⁣⁣9⁣ ⁣⁣G⁣⁣5⁣⁣ ⁣J⁣A⁣ ⁣⁣⁣ ⁣⁣⁣⁣⁣⁣
  • AquaClear 30 Ammonia Remover Filter Insert - 3 pack - Opened/Damaged Box - Image 1 of 1

    AquaClear 30 Ammonia Remover Filter Insert - 3 pack - Opened/Damaged Box

    Brand new · Aqua-Clear
    (1)
    £5.28
    Was: £6.21was - £6.21
    £17.77 P&P
    ⁣U⁣X⁣ ⁣⁣⁣⁣⁣⁣H⁣P⁣ ⁣K⁣G⁣ ⁣⁣R⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣7⁣⁣
  • Corner Filter with Media for Aquariums up to 20 Gallons - Image 1 of 2

    Corner Filter with Media for Aquariums up to 20 Gallons

    Brand new
    (13)
    £8.26
    £21.27 P&P
    ⁣⁣⁣Q⁣⁣Q⁣⁣⁣⁣⁣ ⁣9⁣⁣⁣⁣⁣⁣⁣⁣Z⁣ ⁣⁣⁣⁣⁣⁣⁣X⁣
  • Top Fin CN-S Refill for CN10 Corner Filter 6 Count - Image 1 of 4

    Top Fin CN-S Refill for CN10 Corner Filter 6 Count

    Brand new · Top Fin
    £15.99
    £28.25 P&P
    ⁣⁣J⁣M⁣ ⁣5⁣⁣K⁣⁣ ⁣P⁣W⁣⁣ ⁣⁣⁣Q⁣⁣⁣2⁣ ⁣⁣A⁣⁣Z⁣ ⁣⁣⁣
  • Betta Choice internal aquarium fish tank filter F3 BCF MF723 - Image 1 of 1

    Betta Choice internal aquarium fish tank filter F3 BCF MF723

    Brand new
    £19.00
    Free postage
    Click & Collect
    ⁣3⁣O⁣⁣ ⁣5⁣T⁣⁣ ⁣⁣1⁣⁣⁣U⁣⁣⁣ ⁣⁣⁣⁣⁣5⁣⁣J⁣⁣ ⁣D⁣⁣
  • Lee's Pet Products Quick & Easy® Corner Filter 2 PACK Cartridge, Large - Image 1 of 1

    Lee's Pet Products Quick & Easy® Corner Filter 2 PACK Cartridge, Large

    Brand new
    £6.22
    or Best Offer
    £15.50 P&P
    5⁣⁣T⁣ ⁣9⁣⁣B⁣ ⁣⁣U⁣M⁣⁣⁣⁣⁣ ⁣⁣⁣A⁣⁣⁣⁣⁣⁣⁣⁣I⁣⁣