Flourish deadly to fish?

Dragon Queen

Dragon Queen

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Feb 17, 2005
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I finally pinned down what was wrong with my plants, I think, more K. So I started upping the dose of Flourish. Sun I used about a normal dose, Tues I did about a third of a dose Thurs morn before I started testing the water I saw a dead guppy a good 24 hrs old, Thurs nite another dead guppy.
Thurs at 9 AM Ammonia .25 Nitrate 20 I also dropped the temp 2 degrees the last week, it's starting to warm up here.
Normal Amm 0 Nitrate 15
 
Flourish is a general trace element mixture. If you are low on Potasium specifically, you should be using Flourish Potassium, which provides higher levels of K without all the other minerals. But moderate overdoses should not be injurious, and should certainly not affect the biofiltration - which may be the evidence of some other problem in the tank.
 
I would thing the ammonia is coming from the dead fish, but that would not help you figure out why the fish are dying.
 
RTR said:
Flourish is a general trace element mixture. If you are low on Potasium specifically, you should be using Flourish Potassium, which provides higher levels of K without all the other minerals. But moderate overdoses should not be injurious, and should certainly not affect the biofiltration - which may be the evidence of some other problem in the tank.
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I was using it until I could get to the city to find nu-salt there wasn't any in town, flourish has a higher k value that most of the other minerals in it.

As for the dead fish I haven't seen any sign of anything unusual in any of the others. However my 9 yr old was feeding the fish this last weekend and Mon I turned on the light to find planaria? on the glass so I didn't feed them at all on Mon and lightly since then.
 
I just found a dead molly, but he was almost 2 1/2 yrs, and I spotted a small guppy with a some what shredded tail. Do I have a disease?
 
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