If you are sick and tired of looking at debris on the bottom of your pond then
consider buying an electrically operated vacuum cleaner. Just make sure that it
is safe for pond use. OASE make the one that is best known.
For people who do not like to get their hands too mucky when cleaning out a pond
there are sepcially made long length gloves extending right to the shoulder.
If the water is a little too cold then the fishermen amongst you could easily
use those waders to enter the water if cleaning has to be done.
If you pond or water feature is losing water then do a quick check by shutting
down the pump. If the level stops falling then the leak is outside the pond
itself. If the level continues to fall then obviously the leak is inside the
pond itself.
At higher temperatures oxygen concentration in water falls. In high summer this
can create serious problems if there is a lot of green algae in the pond.
To determine an approximate average depth of your gold fish or koi pond whose
depth is not constant take a stick and mark it in intervals of say 3 inches with
an indelible ink pen. At 10 different places in the pond insert the stick and
record the depths (10 numbers). Add the numbers together and divide by 10. Use
this answer as the average depth of the pond.