Would this be effective and safe for my fish in my 2.5 acre pond? Cattails are cover two of our small islands and extending from our shoreline out 5' or more closing off our fishing areas and has eliminated our shore fishing.

I was told by a local guy this is what we should use:

In 100 gallons of water first add 1 qt. Choice Weathermaster (he said it's a PH adjuster)

Then add:

2 gallons of Round Up
1 qt. Banvel (clarity)
10 gallons of Kerosene

Spray plants to wet.

Would this hurt our fish?

Thanks!!