Mine walk around, climb around, sit in it. Saltwater is imperative for Straws. They live usually hang out in tide pools in the wild, so think of it that way. Don't forget to get yourself a UVB bulb tooKayedeeLove<3 wrote:They are all able to fully submerge even my biggest but more room to swim?
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Edit: I switched to Instant Ocean Reef Salt about 5 months ago due to it having more calcium. My e's and my straws seem to like it a lot more.