Beautiful stones. I just flushed them under the hose for a few minutes and put them in the tank. The tank was only clean after a few hours. An update will be added after the tank is looped. Update: The stones cycle well and have been in my tank for quite some time. I would recommend these stones for launching tanks. They don't wear out, they cycle well. If you are building an aquarium from scratch and don't want to pay a dime for an overpriced live rock, I would go with these. Sizes and shapes vary by box, but they're worth it.
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