I've increased the frequency of my spraying, but it does not appear to have had an effect. I'm looking for advice on what the next step should be. I'm considering:

1. Physical removal - I think I can get the watermeal into a small area but still need a good way to actually remove it from the pond. Any ideas?

2. A different type of herbicide - what would be best without breaking the bank or killing all vegetation in the entire pond?

Thanks!