A few things.

Bloods like it TIGHT. That very well may be too large.

You mention TANK. Is this a fish take with all sides clear? That is instant stress to bloods as they are a secretive snake. Go buy some construction paper and cover those sides. Bloods are also known for not climbing. They are a heavy snake and tend to prefer to stick to ground level. Burrowing into the mulch is a comfort thing. Hides should be as small as possible for them to wedge their bodies into just barely. I would also look at lowering that high end a few degree.

Too much room can easily lead to a nippy STP.
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Cindy Steinle
PHFaust
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