Hi, my wildlife pond (which contains approximately 340 gallons) was only completed last September (2024) and the plants haven't started their Spring growth yet. I am getting slimy surface water, probably due to the blanket weed that is throughout the pond, mainly around the stems of the marginal plants and stuck to some Hornwort I put in last year. I deliberately designed the pond to be safe for hedgehogs and other small animals by having shallow, sloping edges which also encourage birds to drink and bathe. I am pleased to say that many birds use the pond for drinking and bathing and although the Pond Rescue container states that it is safe for pond fish, plants and biological filters, it does not mention birds. Does anyone know whether or not it is safe for birds?