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Originally Posted by hawk
I bought a heater guard for one of my 802's. It is about 1.25" diameter and fits the bottom perfectly. I cut it to about 3" long . On another 802 I used an old Aquaclear tube with a grill on the bottom, this is shoved into the tapered ferrule accessory that came with the 802. Both guards are pretty small and easy to hide.
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The heater guard idea sounds okay. IMO, it provides a larger surface area than the 802's regular intake for water to continue entering the powerhead, even if something small attaches itself to it. I would not trust it with an anemone, though.
The AquaClear tube's grilled bottom does not provide very much more surface area than the 802's regular intake, IMO. I would not use it to protect anemones or other animals, except maybe snails, that may find their way to the intake.