This seems like a really great a deal:
http://cgi.ebay.com/27-Lbs-5Gal-Pre...photoQQcmdZViewItemQQ_trksidZp1742.m153.l1262
but what I'm wondering is that even though it is listed under aquarium fish cleaning and water treatments....would it be safe and affective to actually use on a reef tank?
http://cgi.ebay.com/27-Lbs-5Gal-Pre...photoQQcmdZViewItemQQ_trksidZp1742.m153.l1262
but what I'm wondering is that even though it is listed under aquarium fish cleaning and water treatments....would it be safe and affective to actually use on a reef tank?



