
The biggest problem people will have is that jellyfish only swim near the surface and don't swim around. I tried cleaning them and putting a few drops of dish soap on them (that worked for a day or two) but they didn't float until I filled them with distilled water. I think if your tap water is "right" you can get away with it. If you take out the jellyfish with distilled water, they just hang around whatever you want below. When you turn it on, they appear to swim around the pool (mostly head first, but sometimes they swim tentacles first :p). My only other complaint is that my tank didn't have a water supply line (how much water to put in the tank). tank) as described in the instructions. I've found that the best water level is right at the top of the cutout in the top cap. However, remember that part of the lid must be in the water for part of it to come off. But since now it works for me as it should, I like it! I keep it in my office.

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