I hope someone can advise about a problem I have with my small wildlife pond. It has been in for 3yrs now and has well established planting both in and around. Till this spring I have had only the usual blanket/pond weed problem brought in with an early plant when I was a total novice!!!
Over the last couple of weeks I have noticed a growing amount of green frothy stuff on the surface of the pond. When I first saw it I started to net it out but found I was catching newt spawn so have replaced this and left well alone. I did treat the water with an organic algae product but this does not seem to have helped. I have replaced my barley straw sock with fresh straw but am not sure what to do next.
There does not seem to be any algae under the surface of the water but it is all mixed in with the marginal plants and covered about half the surface of the water.
Does anyone recognise this and also I would be grateful for any advice on how to treat without jeopardising the frog and newt spawn. It is a still pond that I top up with rain water. I did put in a whole water but full in about 4 weeks ago as it had got very low in the winter months and wonder if this might have been the cause. It was quite clear so not sure if it is connected.