Pond plants disease

Hi can anyone give advice over our plants they seem to have lots of spots thanks

 

Hi gizmo found this site
Aphid damage makes the leaf look twisted and distorted. Hose them off into the water or take off the infected leaves. Water plants on the pond shelf don't tend to suffer from many pests or diseases but aphids may affect soft and succulent leaves like those of Alisma or Pontederia species.
Pond plant pests - Waterside Nursery
www.watersidenursery.co.uk/pond-plant-pests/

 

Many thanks for your help and advice.. Would these bugs be coming from other plants in our garden..
I will have a read up on water side nursery thanks