Photos before (1 overall and close ups where necessary)
Fountain pump working on arrival?
Can switch off now for service later
Power turned off?
Investigate in service of pump. Clean of impeller most likely needed
Leave off and return power after service to pump
Grab water samples for pH and GH tests later
Service Equipment in the 2 closest fire hose cabinets.
To drain fastest use two hoses to siphon to storm water drain nearby.
NB: use BASKET STRAINER fittings at the end to prevent sucking gold fish up.
This an annual clean out or quarterly service?
No need to remove plants entirely. Plan for 70% water change
Lift all plants pots out and place to the side in shade. (Best to do right at the start when water is full therefore they are lighter to lift ) Plan for 90% water change
Ensure the DRAIN HOSES are empty of water, Attach BASKET STRAINERS to the the pond ends and sit the suction end securely at the bottom of the pond. Unfurl them as flat as possible so as to make as little interruptions to the fall from pond to drain. This will ensure a steady siphon.
TIPS for the SIPHON:
The higher the water level the less of a height it has to lift over the wall. Therefore it best to get this right from the start and not lose the siphon during the drain as it's harder to restart when the water is lower.
Sucking directly on the drain hoses is not necessary. You can circle your thumb and forefinger over the end so only your palm is in contact with the hose
Position yourself low to the ground, ready to drop the end in the drain as soon as you have finished sucking.
A strong 3 second suction at the drain end should start the siphon running with no danger of taking in water.
Once you have finished sucking lower the end immediately to the ground and wait for confirmation that the water is coming through before moving to drain
Dredge the bottom with NET for rotting debris and dump into bucket Look out for goldfish caught in the net!
When water level getting low can turn on the refill garden hose at the opposite end to flush a little more out of the old water. Then remove drain hoses and continue to refill
Lift pump out over the side and place on ground. Remove fountain head and place in bucket. Remove INTAKE STRAINER CAGE (unscrews from the pump). Remove impeller cover (turn and lock system)
Pull out impeller (if slippery use pliers to grab from one of the impeller blades) BE CAREFUL TO NOT LOSE RUBBER END CAPS!
Wash all parts (including where the impeller sits with toothbrush in bucket of clean water.
FOUNTAIN HEAD has two parts. The inner piece at the very top adjusts the diameter of the fountain bell; the lower it sits inside the main pipe the wider the arc. After washing the parts (sometimes a piece of leaf matter as blocked it partly) you'll have to wait to turn on the pump to see what adjustments you need to make. A bell of water about 12 inches or is suitable. Reassemble, making sure I ever cover is properly locked in place.
Use garden hose.
Remove old or yellowing leaves of Lilies (from base) and snip off bent or broken rush reeds
Timer on the correct time and switched to AUTO?
Find discrete place in garden bed to dump dredged debris and water in with garden hose
Hose down surrounding area briefly.
Photos After (1 overall and close ups of any specific work performed)
Buckets, Brush, Hoses, Net & Basket Strainer ends for hoses returned to cabinets?