couldn't wait for his plants to grow so bought way too many to make the pond look full, then they all grew.
This pond as you can see is as green as it gets but, what you can't see is the proliferation of other algae including blanketweed and sludge on the bottom. After a clean out the water was crystal clear and the fish much happier. We reinstated the fountain leaving the customer the option of two different fountain heads..
Here we have another green and algified pond in urgent need of work.
We stripped it out, sorted the plants, rescued the fish and reinstated the lovely bell jet fountain.
There seems to be a theme here! As you can see we get alot of weedy dirty ponds covered in algae and rectify the problem. Most ponds are left too long, but this one we do every year because its in full sun and has no filter. What you can't see is an 18" long monster carp living happily in the pond. He's called Jaws (what else) 
This pond we clean out regularly but it does get some blanket weed throughout the year.
My customer used some Aqua plankton without consulting me, this product is brilliant in large dirty ponds but in smaller cleaner ponds it tends to make a mess.
Once we finished cleaning the pond, the water was once again sparkling clean and the fish despite prefering the silt, adapted well.
This pond is a wildlife pond but as it's under a pine tree it does need regular work. We drain,remove the wildlife and clean the blanket weed and algae out as well as the pine needles that can build up to about a 2" depth in a year, and refill before putting the wildlife back.
This pond is full of sludge made as the leaves from the nearby leylandi bushes rot away. If left, the pond gets in this state every year so we clean it regularly. This year we found the fountain pump on its last legs and have got it working again hopefully for another year. 
As you can see we work come rain or shine.
This pond is another regular, it again has no filter and has a lot of newts. The newts are handled as gently as the fish when any work is done, and come through with flying colours, infact as soon as we put them back in we witnessed courting behaviour.
As usual for a pond with no ultraviolet clarifier (a device that kills greenwater) the pond is green and as much as the fish love it, you can't see them which kind of defeats the purpose of having the fish dont you think?
The green water also hides them from the heron (note plastic heron in left hand picture) but the wires we string across the pond every year (visible better in right hand picture) prevents the heron nicely.