Well winter is over here in Montreal and the ice is almost gone from my
small ~800gal pond. I have a few questions to ask before I start cleaning
it out and reintroducing my goldfish.This will be my 3rd season with a pond
and for the past two years I have managed to control the suspended algae
with a few different versions of DIY filters but I always been getting some
nasty string algae outbreaks. I want to know what can I do to prevent these
outbreaks. I have heard that leaving some barley straw in the pond will
help control it. Is this true? Are there other techniques to control it?

The second this I want to ask about is pond de-icers. I have 13 goldfish
and have to keep them in two separate aquariums over the winder months
because my pond freezes solid. Next fall I am afraid the fish will have
gotten too big to keep indoors in two aquariums and I don't have place to
set up a third. I was thinking of leaving them in the pond over the winter
but to introduce a pond heater/de-icer. Is this feasible? If so what kind
of de-icers should I be looking at? Any model or brand that you would
recommend?

Thanks for any info.

Mike