I wanted to make a point that no one else seems to have brought up. Technically, tapwater is food grade, as it is safe for human consumption. But, with chlorine, chlroamine, copper, zinc orthophosphate, and a whole host of other potential contaminants, it is the last thing I would use in a reef aquarium.
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Originally Posted by MDPinUSA
New buckets indeed give off an odor. These must be cured out before salts can be mixed and water can be stored in them. If not pH will drop and toxins from resins used to make the bucket will make the newly mixed salt water unusable.
Some salts sold in buckets have the salts in bag. The bag is inside the bucket. Those salts will not be contamnated with direct contact with uncured buckets.
Salts sold in buckets with out a protective bag that keeps the salt from being in direct contact with the new bucket are highly questionable.
E..g. A food grade mositure barrier bag for this application purchased in quanitity cost about $0.55 each. If there is no bag and salts are put directly into a bucket from the salt factory... consider what other costs are being saved with the entire product?
The day and age of buckets is passing. The value/cost of a bucket is questionable.
The current wholesale cost of a printed bucket in quanitity is about $4.50 each, plus $0.85 for the top or lid. Serioius, informed and knowledgable marine keepers are understanding that the cost of the bucket is taken from the integrity of the product.
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But, I also have a question. What is the difference between a food grade plastic bucket versus a food grade plastic bag? Both smell. Both could conceivably leach things. Am I missing something here?