Thanks to my friend who told me about these ozpolish products. I wish it could be available in my local shop. I found Ozpolish bio cure , h2o, o2 are unique, safe and working for aquariums. No doubts I was confused because people saying of getting less than 100 gram quantity. H2O and O2 bottles are not filled to top but when weight checked in a local grocery store, I found all 3 products are 100+ grams. Genuine, good condition, good packaging, received on time. No complain and does have value for my money.