Yes, Methylene Blue, right? They will stain your silicone... And affect plants...
Perhaps you might wanna read these 2 threads discussing whitespot and medication:
http://www.aquaticquotient.com/forum...ad.php?t=16255
http://www.aquaticquotient.com/forum...ad.php?t=16053
There are older threads on the Fish Care forum... Good luck...![]()
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