Step 2 mentions that a crayfish will drown in 3-6 hours if the water is over their head. How can I be sure the level is safe, and would an oxygen filter be helpful for this situation?
Md Ariful Islam
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Dr. Md Rushad Rahman
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Crayfish need a lot of oxygen, so it definitely good to have an air pump to add oxygen to the water. With this they can remain submerged 24/7.
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