We have this pond in the garden where we keep goldfish, the water is extremely muddy I try to change the water but it is difficult because there are many baby fish inside (many of them black so they camouflage with the mud).
Any idea how to remove the dirt in a way that doesn't harm the fish?
(my search on google came up with lots of solutions that can't be used cause of the baby fish…)
water pump that has a filter on it?