Hydra International - Natural Aquatic Treatments, Cleaning & Protecting the Environment
Hydra Aquatic Solutions sales 01908 265889
ALGAE & WEED CONTROL
- Blanket Weed
- Duckweed
- Green Water
- Weed Control
- Fountain Treatments
- Water Feature Treatments
- Lake Treatments
- Combo Offers
AQUATIC WATER TREATMENTS
- Ammonia Remover
- Dechlorinator
- Defoamer
- Montmorillonite Clay
- pH Buffers
- Pond Salt
- Phosphate Remover
- Silt Remover
BENEFICIAL BACTERIA
BIOCIDES & MEDICINES
DYES WATER
FISH FOOD
- Hydra Enhance
- Bombay Mix Fish Food
- Koi Training Cakes
- Peaches & Cream
- Winter Wheatgerm 3mm
- Winter Wheatgerm 6mm
FOUNTAIN TREATMENTS
WATER FEATURE TREATMENTS
LAKE TREATMENTS
- Algae Control
- Blanket Weed Control
- Duck Weed Control
- Green Water
- Lake Silt Remover
- Nutrient Level Reduction
- Weed Control
LEISURE AREAS
EQUIPMENT & MISCL
- Laminar Air Tube Diffuser System
- Laminar Air Disc Diffuser System
- Lake Aerator Systems
- Lake Floating Fountains
- Pond Air Pumps & Fittings
- Pond Air Venturis
- Pond Fish Feeders
- Pond Fish Food
- Pond Filters
- Pond Filter & Pump Sets
- Pond Heaters
- Pond Hose Connectors
- Pond Hose & Fittings
- Pond Nets
- Pond Cover Nets
- Pond Liners
- Pond Lights & Electrical Fittings
- Pond Pipework
- Pond Pre-Filters
- Pond Pumps
- Pond Planting Baskets
- Pond Test Kits
- Hydra Thermometer
- Pond UV Clarifiers + Bulbs
- Pond Vacs & Skimmers
- Water Butt Pumps
SHOP BY BRAND
- ACQUA & CO
- CHARLES AUSTEN
- FIRESTONE
- GORDON LOW
- HAILEA
- HiBLOW
- HOZELOCK
- HYDRA
- NT LABS
- SEALCO GREENSEAL
- YAMITSU

Air Pumps Size Calculation Chart
Caution!!!
Many pump manufactures under estimate the size of pump required, so that it
appears a cheaper, smaller air pump of theirs will do the job of a larger
competitors air pump.
The tables below have been obtained after more than 40 years experience of how
much oxygen is required by bacteria and aquatic life under all conditions.
Remember the higher the water temperature the less dissolved oxygen (DO) the
water can hold.
Pond Air Pump Sizing
|
Volume in
gallons
|
1,000
|
2,000
|
3,000
|
4,000
|
5,000
|
6,000
|
7,000
|
8,000
|
9,000
|
10,000
|
|
Volume in
litres
|
4,500
|
9,000
|
13,500
|
18,000
|
22,500
|
27,000
|
31,500
|
36,000
|
40,500
|
45,000
|
|
Litres air /
min to maintain DO Safe Levels
|
40
|
80
|
120
|
160
|
200
|
240
|
280
|
320
|
360
|
400
|
Lake Air Pump Sizing
Use 1 hp motor per acre












