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Will Flourish Excel kill fish?

44112 Views 13 Replies 11 Participants Last post by  Michael
I have terrible hair algae boom so I decide to over dosing Flourish Excel to kill them. Actually, this is my first time using the Flourish Excel. I got it last night and put 25mlx3 in my 55gal tank. This morning, the hair algae does look thinner and this is a good thing. But I notice the platy and cat fish looks weird after I add the Flourish Excel. They just don't move that much. I even suspect they are dead. Should I do water change ASAP or just let them sit in until the hair algae get controlled?
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The recommended Dose rates for Excel appear to be fine but caution is required if you intend over-dosing. I have known people who have killed their Discus through an Excel over-dose (3 x recommended dosage for algae cure) and another friend almost lost her Clown Loaches to an relatively mild dose of Excel. They were undertaking a water change, removed the water, dosed the Excel and topped-up the tank. Had they topped-up the tank first berfore dosing the Excel the loaches 'may have' suffered less. Obviously many people are experiencing wonderful algae cures using Excel but.... exercise caution.

take care
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