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Old 08/28/2017, 11:04 AM   #13
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Join Date: Apr 2012
Posts: 2,258
Anecdotal at best but I noticed a significant decrease in webs and growth/multiplication when my dosing of Lanthanum Chloride spilled over the filter sock and the tank became cloudy with the precipitate. Most agree it's not healthy for fish/filter feeders however. It's my guess that the vermetid snails did not appreciate it in their webs. Might be worth trying if you've got the setup to do so. Nothing in my tank appeared worse for wear though I did not have any clams/many filter feeders.

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