Skip to main content
Hi
!
Hello.
Sign in
or
register
Local
Daily Deals
Fashion
Help & Contact
Sell
Watch List
Expand watch list
My eBay
Expand My eBay
Summary
Recently Viewed
Bids/Offers
Watch List
Purchase History
Selling
Saved feed
Saved Searches
Saved Sellers
My Garage
Sizes
Messages
Expand Notifications
Please
sign in
to view notifications.
Expand Basket
Loading...
eBay Home
Shop by category
Enter your search keyword
All Categories
Search
Advanced
Best selling products: Best
Fish and Aquarium Nitrate Water Tests and Treatment
Best-selling
Highest-rated products
1
Rank 1
Seachem Prime 500ml Dechlorinator Ammonia Nitrate Remover
(166)
£8.60 New
£8.60 New
---- Used
No used products available
2
Rank 2
Tetra Aquasafe Water Conditioner 5 Litre
(99)
£26.99 New
£26.99 New
---- Used
No used products available
3
Rank 3
Tetra Aquasafe Aquarium Tap Water Conditioner- 500ml
(214)
£10.92 New
£10.92 New
---- Used
No used products available
4
Rank 4
Seachem Prime Water Conditioner 100 Ml 1 White
(63)
£8.69 New
£8.69 New
---- Used
No used products available
5
Rank 5
AQUARIAN Tap Water Safe Aquarium Water Conditioner - 118 ml
(59)
£3.83 New
£3.83 New
---- Used
No used products available
6
Rank 6
Vetark Fluke-Solve Aquarium Treatment - 100g
(31)
£44.30 New
£44.30 New
---- Used
No used products available
7
Rank 7
NT Labs Pondlab 200 Pond Water Parameter Test Kit (026322)
(116)
£24.49 New
£24.49 New
---- Used
No used products available
8
Rank 8
Seachem Prime Concentrated 4L Aquarium Water Conditioner
(5)
£119.95 New
£119.95 New
---- Used
No used products available
9
Rank 9
Seachem Prime Concentrated Conditioner - 1L (437)
(3)
£34.99 New
£34.99 New
---- Used
No used products available
10
Rank 10
NT Labs Aquarium Lab Multi-test Kit - NTLABS
(221)
£24.65 New
£24.65 New
---- Used
No used products available
11
Rank 11
Interpet Bioactive Tapsafe - 500ml
(169)
£4.70 New
£4.70 New
---- Used
No used products available
12
Rank 12
Fluval Aquaplus 21700g Water Conditioner - A8345A2
(26)
£21.79 New
£21.79 New
---- Used
No used products available
13
Rank 13
Tetra AquaSafe Plus Water Conditioner - 100 ml (T113)
(42)
£4.17 New
£4.17 New
---- Used
No used products available
14
Rank 14
Seachem Purigen Ultimate Filtration for Freshwater Aquariums - 100ml
(14)
£13.25 New
£13.25 New
---- Used
No used products available
15
Rank 15
Seachem Prime 0436 250ml Fish Tank Dechlorinator
(55)
£13.15 New
£13.15 New
---- Used
No used products available
16
Rank 16
Seachem Prime Fresh and Saltwater Conditioner 100ml
(28)
£6.31 New
£6.31 New
---- Used
No used products available
17
Rank 17
Evolution Aqua Pure Aquarium 50 Clear Gel Balls (21900)
(285)
£9.90 New
£9.90 New
---- Used
No used products available
18
Rank 18
API Prevent Aquarium Algae Control Solution - 237ml
(40)
£9.29 New
£9.29 New
£9.03 Used
£9.03 Used
19
Rank 19
API 164M Pond Care Master Test Kit
(72)
£24.79 New
£24.79 New
---- Used
No used products available
20
Rank 20
SimplexHealth Total Hardness Water Test Strips - Pack of 10
(80)
£3.99 New
£3.99 New
---- Used
No used products available
21
Rank 21
Fluval Aqua Plus Water Conditioner for Aquariums - 250ml
(77)
£9.95 New
£9.95 New
---- Used
No used products available
22
Rank 22
API ACCU-CLEAR Aquarium Cloudy Water Clarifier - 118ml
(72)
£5.40 New
£5.40 New
---- Used
No used products available
23
Rank 23
API STRESS COAT Aquarium Water Conditioner - 473ml
(44)
£9.03 New
£9.03 New
---- Used
No used products available
24
Rank 24
Tetra Pond Test Strip 6 in 1 (T6912)
(116)
£12.95 New
£12.95 New
---- Used
No used products available
25
Rank 25
ZOGIN 80 Ph 1-14 Universal Full Range Indicator Test Strips Litmus Paper Urine Tester
(137)
£1.89 New
£1.89 New
---- Used
No used products available
26
Rank 26
API Freshwater Master Test Kit pH No2 Tropical Fish Tank
(243)
£29.99 New
£29.99 New
£19.95 Used
£19.95 Used
27
Rank 27
Tetra Aquasafe 5l 5 Litre Fish Tank Tap Safe Water Conditioner Declorinator
(42)
£28.95 New
£28.95 New
---- Used
No used products available
28
Rank 28
Tetra AlguMin 100ml Dual Action Algae Treatment for Aquariums
(15)
£7.48 New
£7.48 New
---- Used
No used products available
29
Rank 29
Aquarium Systems Instant Ocean Salt 4kg/120L
(13)
£18.40 New
£18.40 New
---- Used
No used products available
30
Rank 30
API GH & KH TEST KIT Freshwater Aquarium Water Test Kit
(7)
£11.45 New
£11.45 New
---- Used
No used products available
31
Rank 31
API LR8600 Ammonia Test Kit for Aquarium - Pack of 130 Tests
(56)
£11.95 New
£11.95 New
---- Used
No used products available
32
Rank 32
API 5 in 1 Aquarium Test Kit - 4 Pack
(46)
£4.45 New
£4.45 New
---- Used
No used products available
33
Rank 33
API Saltwater Master Test Kit
(69)
£24.49 New
£24.49 New
---- Used
No used products available
34
Rank 34
Fluval A8344A1 Water Conditioner for Aquariums 500ml
(54)
£12.49 New
£12.49 New
---- Used
No used products available
35
Rank 35
Interpet Bioactive Tapsafe Aquarium Water Dechlorinator - 250ml (0557)
(34)
£9.50 New
£9.50 New
---- Used
No used products available
36
Rank 36
Easy Life EasyCarbo 1000 Ml 1 LT Carbon Source Fertilizer for Aquarium Plants
(55)
£15.82 New
£15.82 New
---- Used
No used products available
37
Rank 37
API Quick Start Freshwater and Saltwater Aquarium Nitrifying Bacteria - 473 ml
(6)
£12.99 New
£12.99 New
---- Used
No used products available
38
Rank 38
Tétra 6 in 1 Tropical Ph KH GH No2 No3 Cl3 Aquarium Water Test Kit
(25)
£6.25 New
£6.25 New
---- Used
No used products available
39
Rank 39
Tetra AlguMin Algae Control Treatment - 250ml
(9)
£8.30 New
£8.30 New
---- Used
No used products available
40
Rank 40
API AQUARIAN Tap Water Safe 473ml White
(3)
£9.99 New
£9.99 New
---- Used
No used products available
41
Rank 41
Seachem 67104530 Flourish Excel - 500ml
(43)
£17.54 New
£17.54 New
---- Used
No used products available
42
Rank 42
EasyLife AlgExit 0.25L Fish Tank Algae Removal - ALG0250
(45)
£8.25 New
£8.25 New
---- Used
No used products available
43
Rank 43
Tetra Crystal Water Clarifier - 250ml
(62)
£12.26 New
£12.26 New
---- Used
No used products available
44
Rank 44
Interpet Anti Fungus and Finrot 100ml Aquarium Fish Treatment
(19)
£7.05 New
£7.05 New
---- Used
No used products available
45
Rank 45
Seachem Stability Tank Stabilization System - 500ml
(28)
£21.40 New
£21.40 New
---- Used
No used products available
46
Rank 46
Seachem Purigen 25ml in Small Filter Bag Postage
£235.95 New
£235.95 New
---- Used
No used products available
47
Rank 47
Interpet Aquarium Treatment Anti White Spot 100ml 0755349505661
(18)
£6.95 New
£6.95 New
---- Used
No used products available
48
Rank 48
Seachem Ammonia Alert for Freshwater and Marine Water
(98)
£10.85 New
£10.85 New
---- Used
No used products available
49
Rank 49
Interpet Gold Tapsafe for Goldfish Bowls Fish Tanks Aquariums Size 125ml
(6)
£3.99 New
£3.99 New
---- Used
No used products available
50
Rank 50
eSHa GASTROPEX 10ml Aquarium Fish Tank Snail Killer Treatment
(359)
£8.19 New
£8.19 New
---- Used
No used products available
51
Rank 51
Fluval Cycle Biological Enhancer - 375ml
(39)
£10.95 New
£10.95 New
---- Used
No used products available
52
Rank 52
API LR1800 Nitrate Aquarium Fish Tank Fresh and Salt Water Test Kit - 90 Tests
(33)
£11.99 New
£11.99 New
---- Used
No used products available
53
Rank 53
eSHa 2000 Finrot & Bacteria Water Additive - 180 ml
(4)
£35.99 New
£35.99 New
---- Used
No used products available
54
Rank 54
Colombo Testlab Pond Test Kit
(38)
£38.95 New
£38.95 New
---- Used
No used products available
55
Rank 55
API Phosphate Test Kit - Tropical Coldwater and Marines Fish Tank Aquarium
(27)
£11.99 New
£11.99 New
---- Used
No used products available
56
Rank 56
API Melafix Professional Aquarium Fish Tank Treatment 1.9ltr
(2)
£54.49 New
£54.49 New
---- Used
No used products available
57
Rank 57
NT Labs Aquarium Treatment Swimbladder 100ml 0733809004817
(11)
£8.95 New
£8.95 New
---- Used
No used products available
58
Rank 58
Seachem Flourish Tabs for Planted Aquarium - 40 Tabs
(7)
£28.99 New
£28.99 New
---- Used
No used products available
59
Rank 59
Interpet 573 Aquarium Swimbladder Treatment - Orange
(22)
£9.49 New
£9.49 New
---- Used
No used products available
60
Rank 60
API Ammonia Test Strip - Pack of 25
(5)
£9.03 New
£9.03 New
---- Used
No used products available
61
Rank 61
Tetra AquaSafe Fish Tank Water Conditioner - 50ml
(82)
£4.79 New
£4.79 New
---- Used
No used products available
62
Rank 62
API STRESS COAT Aquarium Water Conditioner 30 ml Bottle 1 count (Pack of 1)
(39)
£2.99 New
£2.99 New
---- Used
No used products available
63
Rank 63
Interpet Anti Hair Algae Aquarium Water Treatments 125 Ml Pr200 011
(24)
£5.60 New
£5.60 New
£3.83 Used
£3.83 Used
64
Rank 64
API Melafix - 473ml
(20)
£11.12 New
£11.12 New
---- Used
No used products available
65
Rank 65
API LEAF ZONE Aquarium Plant Fertiliser - 473ml (576J)
(32)
£13.25 New
£13.25 New
---- Used
No used products available
66
Rank 66
API KH Test Kit Carbonate Hardness Fish Tank Aquarium Tropical Coldwater & Pond
(9)
£8.49 New
£8.49 New
---- Used
No used products available
67
Rank 67
EasyLife EasyCarbo Aquarium Liquid Carbon Fertilizer 500ml (EC1002)
(65)
£10.45 New
£10.45 New
---- Used
No used products available
68
Rank 68
Tropic Marin Pro Reef Sea Salt 10kg/300L Bucket
(3)
£51.95 New
£51.95 New
---- Used
No used products available
69
Rank 69
Kockney Koi Water Wurzel Barley Straw - 013070 (2 Pack)
(47)
£6.80 New
£6.80 New
---- Used
No used products available
70
Rank 70
Tropica Nutrition Capsules 10 Pcs Plant Fertiliser Water Aquarium Fish Tank X 2
(5)
£6.80 New
£6.80 New
---- Used
No used products available
71
Rank 71
Seachem 250g Safe Water Conditioner - White
(22)
£17.59 New
£17.59 New
---- Used
No used products available
72
Rank 72
Tetra Test 6in1 Strips Aquarium to Test 6 Essential Water Quality Parameters - Pack of 25
(144)
£6.99 New
£6.99 New
---- Used
No used products available
73
Rank 73
API Calcium Ca2 Saltwater Only Aquarium Test Kit
(7)
£11.65 New
£11.65 New
---- Used
No used products available
74
Rank 74
EasyLife ProFito Fertilizer 250ml Aquarium Treatment
(16)
£7.80 New
£7.80 New
---- Used
No used products available
75
Rank 75
API Prevent Algae Liquid Aquarium Water Treatment 118ml
(53)
£7.15 New
£7.15 New
---- Used
No used products available
76
Rank 76
API Liquid Copper Test Kit Freshwater Marine Aquarium Water Testing CU
(3)
£11.49 New
£11.49 New
---- Used
No used products available
77
Rank 77
Fluval A8351A1 Water Treatment - 500 ml
(41)
£16.49 New
£16.49 New
---- Used
No used products available
78
Rank 78
API Stress Coat Tap Water Aquarium Treatment 240ml 85a
(24)
£10.45 New
£10.45 New
---- Used
No used products available
79
Rank 79
NT Labs Aquarium Water pH Test Kit - 120 Count
(68)
£10.69 New
£10.69 New
---- Used
No used products available
80
Rank 80
Interpet Quick Safe Start 50ml for Coldwater & Tropical Aquariums 0755349551026
(20)
£2.99 New
£2.99 New
---- Used
No used products available
81
Rank 81
Fluval Aqua Plus Water Conditioner - 375ml
(50)
£9.29 New
£9.29 New
---- Used
No used products available
82
Rank 82
Waterlife Protozin 1000ml 1l Fungal Disease Treatment
(3)
£21.75 New
£21.75 New
---- Used
No used products available
83
Rank 83
Tropica Specialised Nutrition Plant Care Fertiliser - 750ml (For 6000 L)
(3)
£19.80 New
£19.80 New
---- Used
No used products available
84
Rank 84
Al86 API Freshwater Deluxe Ph 6 - 7.6 Test Kit Aquarium Tropical Fish Tank 250
(7)
£11.95 New
£11.95 New
---- Used
No used products available
85
Rank 85
Api 473ml Tap Water Conditioner
(20)
£12.54 New
£12.54 New
---- Used
No used products available
86
Rank 86
Fluval Biological Enhancer For Aquariums - 2L
(7)
£39.95 New
£39.95 New
---- Used
No used products available
87
Rank 87
NT Labs Anti-White Spot and Fungus Water Additive
(20)
£7.90 New
£7.90 New
---- Used
No used products available
88
Rank 88
Seachem Flourish Tabs Gravel Bed Supplement - 10 Tablets
(8)
£11.85 New
£11.85 New
---- Used
No used products available
89
Rank 89
- Interpet Quick Clear Aquarium Treatment 125 Ml 0755349551095
(20)
£6.46 New
£6.46 New
---- Used
No used products available
90
Rank 90
Seachem Alert pH and Ammonia for Freshwater
(67)
£13.95 New
£13.95 New
---- Used
No used products available
91
Rank 91
Tetra Aqua Easy Balance T164 100ml
(12)
£5.87 New
£5.87 New
---- Used
No used products available
92
Rank 92
Tetra Crystal Water Treatment 100ml (551346)
(51)
£8.84 New
£8.84 New
---- Used
No used products available
93
Rank 93
Waterlife Myxazin 100ml Bactericide Fish Treatment Fin Rot Aquarium
(7)
£7.50 New
£7.50 New
---- Used
No used products available
94
Rank 94
Seachem Flourish 100ml Aquarium Plant Care Trace Elements Nutrients
(3)
£8.74 New
£8.74 New
---- Used
No used products available
95
Rank 95
API Aquarium Tonic Salt 454g Tropical Fish Medication
(21)
£5.04 New
£5.04 New
---- Used
No used products available
96
Rank 96
Tropica Plant Growth Premium Fertilizer 125 Ml Fertili
(4)
£8.35 New
£8.35 New
---- Used
No used products available
97
Rank 97
Fluval Cycle Biological Enhancer + Aquaplus Water Conditioner Water Treatment Pack - 2 x 250ml
(13)
£11.49 New
£11.49 New
---- Used
No used products available
98
Rank 98
Fluval A8355 8.4 fl oz Biological Cleaner for Aquariums
(27)
£9.56 New
£9.56 New
---- Used
No used products available
99
Rank 99
NT Labs Algae Gone 250ml Green Water Cloudy Treatment Aquarium Fish Tank
(6)
£11.99 New
£11.99 New
---- Used
No used products available
100
Rank 100
API White Spot Cure for Fish Tank - 118ml
(35)
£7.57 New
£7.57 New
---- Used
No used products available