Remember ALWAYS but ALWAYS take a water sample

Before deciding what your water problem is, it is absolutely essential that you take a sample of water from your pond or lake into a clear glass and hold it up to the light - if you just look at the body of water you will never get the true picture. 

If it’s green or cloudy you either have excessive single cell algae or excessive suspended solids and need the following Hydra Aqua product:

• Pond with exterior filtration system (not filter on submersible pump) - Hydra Crystal. 
• Pond without an exterior filter system - Hydra Pond Clear Plus.
• Lakes which normally do not have any filter system - Hydra Rapide.
• Fountains - Hydra Fountain Clear.

If the water looks green in the pond /lake but is crystal clear or very slighly cloudy in the glass you have excessive nutrients and need:

• Spring - Summer:   Bio Aquatic Bacteria Boost   
• Autumn - Winter:   Hydra LT Extreme.

Please check chart below for your own particular problem.

Problem	Area to Use	Product to Use
Green Water / Cloudy Water	Pond with filter system Pond no filters Lakes Fountains	Crystal Pond Clear Plus Rapide Fountain Clear
Blanket Weed / String Algae / Slime	Ponds Lakes Fountains	Quartz Lake Clear Fountain Clear
Water looks green in pond / lake, but glass water sample is either crystal clear or very slightly	Spring – Summer Autumn - Winter	Bio Aquatic Bacteria Boost   LT Extreme
Duck Weed Control	Ponds                             Lakes	DW-400
Fish colours dull and washed out, aids fish health removes impurities from water	Ponds and Lakes	Enhance
Ammonia levels high	Ponds	Ammonia Lock
Using tap water - treat for chlorine and chloramines	All tap water	Aqua Dechlorinator
Water pH too low, insufficient carbonate hardness or general hardness	Immediate fix             Long term buffering	pH Up                                 pH Buffer
Phosphate levels high	Ponds and Lakes	Phos-Gone
Suspended particles in water - filter system not catching small particles	All pond filter systems including pressurised	Pond Filter Blanket
Excessive silt build-up, anaerobic bacteria in silt sludge	Ponds                             Lakes	Silt-Less
Filter system or water lack sufficient natural bacteria to break down excessive nutrients in the water	Spring – Summer Autumn - Winter	Bio Aquatic Bacteria Boost LT Extreme
Colour water dyes – aesthetic – special occasions, hides fish from predators, reduces weed growth	Ponds Lakes Fountains	Black Water Dye Blue Water Dye Flourescent & Other Colours
Large amounts of foam	Ponds                             Lakes                      Fountains	Aqua De-Foam
Disinfectants – Fish Bio-safety	Ponds Lakes Fisheries	) Hydra Quat ) Hydra Chlor-Koi ) Hydra Annihilate ) Hydra Steri-Dri