The bottle I received is not the one in the photo. The one in the photo is yellow and has a swivel nozzle (like my old one) which makes adding just a few drops much easier. The one I received is white and has a flip top cap with a spout like a shampoo bottle. The problem is that if you don't turn the bottle completely upside down, the drops will drip onto the top of the bottle and use up some of the product. If you turn the bottle completely upside down, it's easy to accidentally add too much (which isn't necessarily dangerous for the fish, but it also wastes the product). So I think it does what it's supposed to do, so I still have to give it 4 stars.
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