Hi, I'm have been slowly assembling a used RedSea Reefer 750XXL Classic (yes I have read all about the horror stories) which is a 200 gallon system. I finally got to the point where I was mixing my RO/DI water with a newly ordered blue 200gallon bag of RedSea salt I bought from Bulk Reef Supply. When I opened the shipping box, I noticed that the bag was open on one side, but wasn't blatantly visible until I started looking for a way to open the bag without dumping all over the place. I started carefully measuring the salt into my first 55 gallons of RO/DI water, where I put 27.5 cups in as recommended here on Reef2Reef. Once I mixed it an put it in the tank, then I learned about just putting the RO/DI line in my tank to fill it directly and to mix the rest of my salt. I measured another 50 cups (all the rest) in the bag for 77.5 total cups. I don't have a salinity checker yet (coming in next week), but isn't that 22.5 cups short of what is supposed to be in the bag? I sent a message to BRS and RedSea, but want all you who are experienced to let me know if this is normal or not. I have to wait until Monday.