Big bass - in case you're interested in a second opinion..........
*DO USE one of the chelated copper algaecide formulation (CUTRINE et al) if so desired, but not exclusively or extensively, as there are many algae management techniques that are available.
*DON'T use REGLONE in your pond since it isn't labeled for aquatic uses - period! REWARD or WEEDTRINE D are appropriate options - though not always the most cost-effective chemical alternatives for controlling algae.
*Consult with someone who has knowledge of and first-hand experience with aquatic algaecides (and herbicides), which doesn't necessarily include many chemical suppliers, feed stores or ag extension personnel.

Good algae control starts with proper preventative measures, which include the pond's depth-design, reducing water clarity and avoiding nutrient-loading. Other control measures to consider are physical removal, lake dyes (in some cases), microbial treatments and the prudent use of appropriate algaecides.
In general, I would avoid using copper sulfate for most ponds. It doesn't have a very good environmental reputation - and some fish species may be very sensitive to all forms of copper under certain water-conditions.
Chara is a tough critter to tame. Physical removal, when possible, followed by judicious treatments of CUTRINE PLUS Granular seems to work fairly well - up until the time that calcium deposits begin to form on the Chara as the season advances.
Review (search) some of the past threads on algae and Chara control for more details.
KD

Kelly Duffie
Cypress, TX