No swimming off our dock, so that's not an issue. However, we've had a lot of broken lines on sunken brush. Plastic habitat should be better in that respect, though admittedly imperfect. No matter what the marketing folks tell us, hang ups are always possible, even if less frequent.
I'd love to see some research into the impact of shallow water shade in summer heat. Not sure I believe theory that sunlight hurts fish eyes, but I do believe shade offers them a kind of visual cover, plus a thermal refuge when things get really hot.
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