Quote:
Originally Posted by justinl
i have quite a few patches of thecate hydroids (i was trying to wait them out but it's getting kind of silly now). when i get a chance, Im going to try "surgical strike" burning with a soldering iron. that way i won't bleach half my rock with boiling water; i usually apply boiling water by pouring a fresh kettle onto the infected patch (i like to be thorough).
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They come back after the kettle tratment?