Sure, Mike, you can use a combination of algae-eating fish that we have in stock. Give me a call and I'll give you some ideas. If this is a private lake/pond, since it is so big, it would be best to figure out a budget for stocking and we can work it from there. Thanks, Paul @ Angels Hatchery
as far as fish tropheus are natural algae grazers...have you tried nerite snails?
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