DyoFix algae inhibitors for ponds
Two products to help keep the dreaded green gunge at bay!
First there's DyoFix Black - as seen on the Beeb - for ornamental ponds & water-features that don't have fish: it blocks the sun's rays so starves the algae of their food source. Plant and filter safe, it really enhances the reflective properties of ponds too!
For ponds with fishy inhabitants there's DyoFix Blue. This is clever stuff: apparently the parts of daylight that supply the algae with food are the blue, violet and indigo part of the spectrum, so they've made a cunning blend of dyes that acts as a barrier by reflecting these colours away from the surface and, at the same time, allows the other parts of the light into the pond. I'm impressed! :)

Garden Pond Information Pages
Pond and Water Garden Information: free Water Gardening eBooks, free fun and informative Water Gardening newsletter, free ePostcards with Water Garden themes ... and more. Complete online catalog.

Ponds Online
A canadian site with lots of information on contructing and building ponds, including pump sizing. Be aware that the figures are in american gallons.

The Pond Professor
A wealth of technical information on all important water gardening topics to ensure that your pond is crystal clear all year round.

Water Features On-line
Water features of all shapes and sizes, oak barrel water butts and planters.

Water Garden
Technology for Garden Ponds and Water Features.
Pond pumps, liners, filters, garden fountains, lighting, pond maintenance, Pondovac, and mist makers.