Sodium dichlor to kill pond algae

I have a 75 gallon pond that is green with algae. I bought sodium dichlor to kill it. There are no fish. How much sodium dichlor should I use? Thanks

 

Welcome to the forums.

The problem with chemical treatments is that they are only very temporary.
Sodium dichlor is a chemical used for super-chlorination in a pool. I'm not a pro in this field although I do have a pool. I'm not sure that would be the right product.

I do know that a non-chemical way to treat algae is barley straw and barley straw liquid.
The barley straw is allowed to float on the surface. It may try to sink in which case you could tie some to an empty and capped soda bottle to keep it floating long enough to decompose and do its job.

Others will be by to add their advice. Moderator Pilot Dane is well versed in this field and I'm sure he can help.

 

I assume the algae is bad. Since the pond is only 75 gallons I would drain it and give everything a thorough cleaning. Re-fill with fresh, clean water and go on with normal daily/weekly chemical treatments to prevent algae regrowth.

 

I agree with post# 3......or, you can use the type of liquid copper the pool techs use for algae.