I thought that I had in the past, but I'm thinking maybe not after this episode. I almost always bleach my plants but very conservatively. About 1 oz bleach per gallon for about one minute, then rinse repeatedly. Listen to this sad story. I was fishing last week and found the mother lode of hornwort on the lake. I needed some for my tub ponds so I brought home about 10 gallons. Sorted and cleaned for a few hours and ended up with about 3 gallons of nice hornwort. But it had a ton of critters in it so I upped the bleach to two oz and soaked for 2-3 minutes. Real bad idea! EVERY last strand of it was looking bad in a few hours and completely melted by the next day. I had an inch of plant mush on the bottom of three tub ponds and three aquariums. Nothing 12 WCs wouldn't fix. What a mess it was.