Glad I carefully read the instructions along with their website before beginning. I knew I couldn't trust all the "bottled water" from the gas station as some contained tap water chemicals. Went to the grocery store and they had "purified" water, "spring water" and "distilled" water. Any of these could have worked, but I used spring water (the instructions don't recommend "bottled water") and they actually hatched on the button in about 48 hours. I did not wash the tank before use. My 5-year-old is very excited and solemnly signed the agreement from the legal guardian. Im impressed with the tank and the brand in general. I know Sea Monkeys used to have some pretty polished options and I'd love to see this brand expand.
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