Dose too much Florish Excel, dead fish? - The Planted Tank Forum
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post #1 of 41 (permalink) Old 03-17-2007, 04:03 PM Thread Starter
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Dose too much Florish Excel, dead fish?

Darn it, I dose a little too much Exel and now my fishes are dying as I speak. I dose 1.5 capeful of exel in a 10 gallon, right after I did a 40% water change. You guys think I dose too much exel along with the water change that's why I got dead fishes?

Also what chemical are in exel that could kill fish if dose too much?
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post #2 of 41 (permalink) Old 03-17-2007, 04:25 PM
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It could be... Do a 50% water change immediately...

Excel has a chemical that's a lot like formaldehyde in it ( the stuff you use to embalm dead things)..


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post #3 of 41 (permalink) Old 03-17-2007, 04:48 PM
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Ouch! I capfull = 60 gallons if I remember correctly!! (or was it 50 gallons?)

Definitely do a LARGE water change! You can still save the remaining fish!!
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post #4 of 41 (permalink) Old 03-17-2007, 06:20 PM
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My Excel bottle bottle says 1 capful for 10 gallons. That's probably not the reason your fish are dead.

In college....so no aquariums for a while.....
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post #5 of 41 (permalink) Old 03-17-2007, 06:26 PM
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You are dosing to much thats for sure, I would also check your water params.
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post #6 of 41 (permalink) Old 03-17-2007, 07:04 PM
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Quote:
Originally Posted by mnsnowdaboy View Post
Darn it, I dose a little too much Exel and now my fishes are dying as I speak. I dose 1.5 capeful of exel in a 10 gallon, right after I did a 40% water change. You guys think I dose too much exel along with the water change that's why I got dead fishes?
Excel is a dilute form of glutalaldehyde. It's a disenfectant.

You dosed too much Excel!

Seachem's recommended dosing for 10 gallons of water calls for 5 mL after a water change and then 1 mL daily after that.

Your 10g tank probably contains about 8½ gallons. The dosing for this amount is 4.3 mL after a water change and 0.9 mL daily after that.

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post #7 of 41 (permalink) Old 03-17-2007, 09:32 PM Thread Starter
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They're all dead, that sucks. It's got to be the florish because I've had these fish for 6+ months with no problems. Little neons are now jumbo size and I do everything the same....Exept I added Florish Exel this time.

There goes another lesson learned the hard way. I was doing so good to for a year now since I got back into the hobby, this was a step backwards.
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post #8 of 41 (permalink) Old 03-17-2007, 09:50 PM
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For the future.. DOn't dose excel at all if you have tetras.. It seems like they're pretty sensitive to the stuff


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post #9 of 41 (permalink) Old 03-17-2007, 10:42 PM Thread Starter
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My 10 was doing good too the way it was with low light plants. I was just wondering how much improvement it would make with exel. Oh well, I got plenty of neons left in my so called Quarantined tanks, so when the water is good I'll just put them in the 10 minus the exel. Darn I really wanted to see how big I can grow these neons too. I got them when they were just so tiny and they are big and fat now. I've always wonder how long it takes for them to get to the so called "jumbo" size.
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post #10 of 41 (permalink) Old 03-17-2007, 11:33 PM
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Yeah, .5ml for 10g. You dosed about 3.75ml or over 7 times the recommended amount. That will absolutely kill your fish.

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Originally Posted by mistergreen
For the future.. DOn't dose excel at all if you have tetras.. It seems like they're pretty sensitive to the stuff
Do you have any evidence to back this up? Myself and hundreds of other people on this forum have dosed Excel (even overdosed, but not to the extent in this thread) with all kinds of tetras with no problems whatsoever.

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post #11 of 41 (permalink) Old 03-17-2007, 11:34 PM
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Normally that would not be enough to kill fish. Lots of people overdose 2 to 3x normal dosage for various reasons without problems.

What size bottle are you dosing from? Seachem mistakenly still uses the same label on all their bottles and if you are dosing from a bottle bigger than 500ml then the caps are way bigger than 5ml each. In this case instead of dosing 7.5 ml you may have dosed 20 to 30 ml which might explain the problem.

Sorry about losing your fish,
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Originally Posted by mnsnowdaboy View Post
Darn it, I dose a little too much Exel and now my fishes are dying as I speak. I dose 1.5 capeful of exel in a 10 gallon, right after I did a 40% water change. You guys think I dose too much exel along with the water change that's why I got dead fishes?

Also what chemical are in exel that could kill fish if dose too much?
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post #12 of 41 (permalink) Old 03-18-2007, 12:18 AM
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Quote:
Originally Posted by mistergreen View Post
For the future.. DOn't dose excel at all if you have tetras.. It seems like they're pretty sensitive to the stuff

I have been dosing excel in my tank and it has 4 tetras, never had any trouble, extremely healthy fish. You can introduce it slower to the tank and most fish will adapt if done properly.
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post #13 of 41 (permalink) Old 03-18-2007, 01:36 AM
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I think it was something else that did your fish.
I've done the spot treatment with excel - 10 ml on anubias - in a 10G with sherry shrimp and endlers and no casualties.
Just my 2 cents.
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post #14 of 41 (permalink) Old 03-18-2007, 01:49 AM
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I had an outbreak of BBA and hair algae. I spot treated for a while and have been dosing 4 capfulls in my 20 gallon tank every morning for the last couple of weeks. The algae is no longer an issue and my 5 cardinal tetras are doing great. I also think something else got to your fish.
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post #15 of 41 (permalink) Old 03-18-2007, 02:05 AM
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I'm starting to think there must be different strength Excel forumlas out there. The one I have recommends one capful for 60 gallons. 4 capfuls in a 20g of the stuff I have would wipe EVERYTHING out. JHipkin, what's the recommended dosage on your bottle?

Sol
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