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sales@hydra-int.com All Products are Held in Stock and are dispatched the Following Working Day of Receipt of Order (Monday - Friday). Shop search Enter your search keyword in titles & description Shop categories Shop home Koi Pond Algae Treatments (1148) Green Water Treatment (166) Fountain Algae Control (104) Blanket Weeds Control (243) Duckweed Control (316) Lake Cloudy Water Control (40) Lake Blanket Weeds Control (57) Garden Pond Clear (112) Dyed Fountain Clear (76) Pond Bacteria & Green Water (34) Koi Pond Water Quality (615) Pond Beneficial Bacteria (114) Pond Ammonia Remover (52) Pond Defoamer (61) Pond Water Dechlorinator (63) Pond pH Balance (51) Pond pH Increaser (24) Pond Phosphate Remover (65) Pond Silt Remover (58) Pond Winter Weather Bacteria (5) Pond Clay (99) Pond Salt (23) Water Dyes (539) Hydra Black Water Dye (101) Hydra Blue Water Dye (329) Fluorescent Green Dye (105) Green Dye (4) Acne Treatment (1) Hydra Bajour Biocidal Soap (1) Hand Sanitiser (40) Biocidal Hand Wash (40) Hydra Biological Treatments (851) Grease Traps Treatments (220) Hydra Bio Block (38) Hydra Grease-Eater Liquid (126) Hydra Bio Blast (56) Septic Tanks Treatment (283) Hydra Re-Gen (62) Hydra HS Neutraliser (73) Bio Clean (80) Hydra Septo Boost (68) Grease Traps (252) Hydra Grease Trap ST1-18L (96) Hydra Grease Trap GT1-150L (72) ST / GT Grease Traps (84) Farms & Industry (96) Bio Sludge Buster (39) Bio Sewage Buster (57) Pond Filters (37) Basic Filter (2-Stage) (6) Standard Mega Filter (4-Stage) (6) Large Mega Filter (6-Stage) (8) XL Mega Filter (6-Stage) (8) Max Mega Filter (6-Stage) (9) Pond Pumps (87) Small / Fountain Pumps (25) Submersible Pumps (62) Pond Disinfectants Sterilisers (113) Hydra Annihilate Aquatic (43) Hydra Chloramine-T (65) Hydra Quat (3) Hydra Steri-Dri (2) Pond Aeration (42) Medo Air Pump (42) Pond Koi Food (82) Hydra Enhance (3) Yamitsu Koi Training Cakes (23) Yamitsu Peaches & Cream Food (21) Yamitsu Bombay Mix Koi Food (35) Cleaning Products (92) Hydra Blitz (42) Algae Free (35) Hydra Pre-Clean (15) Septo Air Domestic (162) <20 People (132) Basic Conversion Unit (30) Septo Air Commercial (162) BOD<2300 gm/24 hr (132) Ultimate Conversion Unit (30) Disinfectants & Sanitisers (30) Hydra Citra (30) Hide all sub-categories Display Hide gallery view View time left Shop pages Ponds Lakes Problem Solver Pond Products Instructio​ns Cleaning Ponds and Maintenanc​e Legislatio​n in the Kitchen Fats Oils Grease-FOG​'s Water Quality FAQ's Customer Testimonia​ls Hydra ISO 9001-14001 Registered About the seller Store Newsletter! 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General Interest View: All Items | Buy It Now 615 results found in Koi Pond Water Quality View as:Gallery Sort by:Best Match Postage to UK More options Pond Dechlorina​tor Hydra Aqua Dechlorina​tor 1L, 5L for ... £19.29 Postage:Free Time left:21d 12h 0m More options Hydra Aqua Dechlorina​tor-1Ltr,5​Ltr Pond Treatment Water... £19.29 Postage:Free Time left:2d 6h 7m More options Balance GH and KH Buffering Solution pH Buffer 1Kg, 5Kg... £86.64 Postage:Free Time left:27d 8h 19m More options Hydra Silt-Less All-in-One 1Kg, 5Kg, 20Kg Removes Organ... £65.89 Postage:Free Time left:27d 8h 21m More options Buffering Solution Pond Acidic Water Ph Regulator Hydra... £17.19 Postage:Free Time left:27d 8h 19m More options Availble 3 Sizes 1Kg,5Kg,20​Kg Hydra Silt-Less All-in-On.​.. £65.89 Postage:Free Time left:18d 6h 55m More options Pond Foam Remover Hydra Aqua De-Foam 250ml-1L Water Sol... £12.59 Postage:Free Time left:19d 8h 14m More options Colour Enhancing Koi Clay Hydra Enhance 1Kg, 5Kg, 20Kg ... £18.19 Postage:Free Time left:21d 11h 47m More options Bio Aquatic Beneficial Bacteria Boost 500g, 1Kg, 5Kg, 1... £29.54 Postage:Free Time left:21d 11h 46m More options Hydra Enhance 1Kg, 5Kg, 20Kg Bentonite Montmorill​onite ... £96.84 Postage:Free Time left:21d 11h 55m More options Increase your Low pH Pond Water by Hydra pH Up 1Kg, 5Kg £15.14 Postage:Free Time left:27d 8h 18m More options pH and KH Stabiliser Pond Water Treatments Hydra pH Buf... £17.19 Postage:Free Time left:27d 8h 19m More options Pond Water Treatments Hydra pH Buffer Solutions 1kg, 5K... £17.19 Postage:Free Time left:27d 8h 19m Enlarge 1 Kilo HYDRA PHOS-GONE TO REMOVE PHOSPHATES IN WATER £22.34 Postage:Free Time left:6d 3h 56m More options Ammonia Lock Recharge by Hydra Pond Salt 5kg, 20kg for ... £15.14 Postage:Free Time left:21d 11h 44m More options Pond Algae Control by Hydra Bio Aquatic Bacteria Boost ... £21.34 Postage:Free Time left:21d 11h 59m More options Hydra pH UP 1Kg, 5Kg Maintains ph Balance in your Koi P... £15.14 Postage:Free Time left:27d 8h 18m More options Remove Pond Silt Hydra Silt-Less All-In-One 1Kg-20Kg Po... £22.34 Postage:Free Time left:27d 8h 22m More options Hydra Aqua De-Foam 250ml-1L Anti Foaming Agent for Pond... £12.59 Postage:Free Time left:19d 8h 14m More options Hydra Aqua Dechlorina​tor-1Ltr,5​Ltr Pond Water Dechlorin.​.. £19.29 Postage:Free Time left:2d 6h 7m More options Hydra Aqua De-Foam 250ml-1L Instantly Removes Unsightly.​.. £17.19 Postage:Free Time left:19d 8h 14m Enlarge Beneficial Bacteria Hydra Silt-Less All-in-One 1Kg Redu... £22.34 Postage:Free Time left:10d 6h 13m More options Hydra Phos-Gone 1Kg-20Kg Remove Pond Phosphate from Wat... £22.34 Postage:Free Time left:21d 8h 20m More options Remove Ammonia from Water 5kg, 20kg Natural Granular Ze... £23.19 Postage:Free Time left:21d 12h 0m More options Hydra Enhance Montmorill​onite Bentonite Fish Health Tre... £40.69 Postage:Free Time left:11d 6h 59m More options Remove Phosphates to Maintain Pond Water Quality Use Hy... £22.34 Postage:Free Time left:21d 8h 21m More options Balance Pond pH Fish Pond Water Treatments Hydra pH Buf... £86.64 Postage:Free Time left:27d 8h 19m More options Hydra Enhance-Fi​sh Health-Wat​er Clarity- Availble 3 Pac... £18.19 Postage:Free Time left:11d 6h 59m More options Bio Aquatic Bacteria Boost 500g, 1Kg, 5Kg, 10Kg for Pon... £21.34 Postage:Free Time left:21d 11h 46m More options Tap Water Conditione​r Hydra Aqua Dechlorina​tor (1Ltr,5L..​. £19.29 Postage:Free Time left:2d 6h 8m Page 1 of 8 Previous 1|2|3|4|5|6|7 Next Go to page