Brochures received. I have previously purchased this type of sheets from other sellers. No matter who you buy the leaves from, cook them for at least 3-5 minutes. After that, put the leaves in cold water for 10-30 seconds and then drop them into the tank. It takes a while for the tannin to release, so don't panic and toss all the leaves in the tank if you don't see any tannin for the first few days.
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