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SAT · 01/31/2018, 05:53 AM

It's not "live" sand that is a problem, it's the carbonate which will absorb copper ions.

The classic treatment uses copper sulphate at 0.15ppm. The other flavors are copper bound into an organic molecule, which is less toxic (thus allowing/needing a higher concentration) and stays in solution better. Note that some copper test kits don't work with these flavors.

Paraguard is not copper and I doubt it works reliably.

01/31/2018, 05:53 AM	#19
SAT Registered Member Join Date: Apr 2001 Location: Berwyn, PA Posts: 4,073 Blog Entries: 1	It's not "live" sand that is a problem, it's the carbonate which will absorb copper ions. The classic treatment uses copper sulphate at 0.15ppm. The other flavors are copper bound into an organic molecule, which is less toxic (thus allowing/needing a higher concentration) and stays in solution better. Note that some copper test kits don't work with these flavors. Paraguard is not copper and I doubt it works reliably. __________________ Stuart Current Tank Info: 300G Caribbean biotype reef set up in 2003.