Hi all, got a customer with a fairly large shallow cement based pond which is basically covered at the base with algae. Just wondering if anyone knows the best way to get rid of the problem? They have fish so im wary of using any type chemical. They do have a water feature that runs into it but do not run it until late in the day and not for long.
I have recommened placing some Water Lillies in small pots to reduce sunlight, and to run the pump longer, however is there a way to remove the current build up?
Cheers