Its the best water conditioner Ive used it for years

Because it is not as concentrated as Seachem Prime, you can measure the required volume far more accurately and hence waste less. I premix the conditioner with tap water in 25 litre containers each of which requires 4 ml of Blue Planet (easy to measure with a syringe) yet only 0.6 ml of Prime which is very difficult to measure accurately, even with a small syringe. Inevitably one errs on the side of caution when using Prime so you overdose and use it up much faster than necessary. A great marketing ploy! I do use Prime when dosing a large volume of water but prefer Blue Planet for regular water changes.

It leaked a little bit however I think that was because the delievery man left it upside down on my porch