I'm a newbee,
After surfing the Internet and because of the nature of the grond
where I live, I built my pond in cement, "broke" its borderline with
rocks, it has quite a look and feel od a natural pond, I'm in sealer
stage.

can you recommend a sealer that will be fish friendly in terms of its
component?
can you also recommend a preferred color, the pond will be in some
shade in the future ( till a close by tree grows enough to shade it
partially ) but now has something like 8 month hard, direct sun.
thanks in advance.
Zeev