On 05/07/2010 13:25, Snoddie wrote:
Summer Algae.

Remedy water soluble food dyes (E133), non toxic to fish, however
underwater plants will be effected as they cut out UV light.

Caution please makesure that you use "food dyes" as other dyes could
cause damage to the pod life - all food dyes have preceed with E, I have
suggested E133 which is a blue colour.
This dye will hold its colour for approximately 1 month before fading.
Reputable sellars will be able to provide a "Material Safety Data Sheet
- MSDS".

That's interesting, I have no fish and presently a couple of underwater
plants but obviously am open to suggestions as the reflection from the
pond is an attractive feature.

Geoff Lane