What happens if....EI dosing... ? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 07-27-2011, 03:45 PM Thread Starter
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What happens if....EI dosing... ?

Hi, I have been running EI dosing for about 4 weeks now but have now got kribensis fry. I have stopped dosing as I don't want to do a water change until I know if the fry will survive in my community tank.
What will happen if I keep dosing but don't reset with a 50% WC each week??
What will happen if I stop dosing but don't do the WC?

I'm guessing possible algae issues either way??

It looks like my fry will get eaten as ive lost a few already but am also asking for future info...

Thanks

Just Plantin' and prayin'

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post #2 of 9 (permalink) Old 07-27-2011, 03:54 PM
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Remember that pantyhose makes a pretty good filter. But you could probably just reduce your lighting, cut back on the EI, and resume in a couple weeks.
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post #3 of 9 (permalink) Old 07-27-2011, 04:08 PM
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Really, the fry should be fine with the dosing if that's what you're worried about. I've been raising peppered and emerald Cory fry, As well as guppy fry, in my high light/co2/ei 29 gallon tank for almost a year now..

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post #4 of 9 (permalink) Old 07-27-2011, 04:10 PM
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Could also always get a large external breeder box from mordalphus or Nikki too and hang that on your tank to be safe.

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post #5 of 9 (permalink) Old 07-27-2011, 04:59 PM Thread Starter
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ok, thanks for the replies. i guessed that it would be fine to continue or reduce with light, co2 etc.
Would love a breeder box in the top of the tank but the chances of me catching any fry are minimal as mum is keeping them tucked in a heavy planted inaccessable corner... Think i will try that next time somehow if i lose all of this brood.... want to start raising some store credit and make the money pit start paying for itself!!

My understanding of EI is that the tank is always 'overdosed' and needs to be reset once a week... So what happens if for some reason i cant do a waterchange or it goes 10 days? will the ferts reach a toxic level that could harm fish and or plants??

Just Plantin' and prayin'

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post #6 of 9 (permalink) Old 07-27-2011, 11:47 PM
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Quote:
Originally Posted by eser21 View Post
ok, thanks for the replies. i guessed that it would be fine to continue or reduce with light, co2 etc.
Would love a breeder box in the top of the tank but the chances of me catching any fry are minimal as mum is keeping them tucked in a heavy planted inaccessable corner... Think i will try that next time somehow if i lose all of this brood.... want to start raising some store credit and make the money pit start paying for itself!!

My understanding of EI is that the tank is always 'overdosed' and needs to be reset once a week... So what happens if for some reason i cant do a waterchange or it goes 10 days? will the ferts reach a toxic level that could harm fish and or plants??
You're right in that frequent water changes are necessary/required if you are dosing EI because the ferts you are putting in are more than the amount that the plants use, so the fert levels will build up over time to become toxic. If you have low light, they will build up really fast because the plants aren't growing at a fast rate, but they will build up regardless of lighting as long as you are keeping them in excess. I'd say going for 10 days is probably fine, but you just don't want to go too long (again, depensd on how much in excess you are, but I'd just cut down the dosage if you are in doubt. Don't skimp on the water changes while dosing full EI).

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post #7 of 9 (permalink) Old 07-28-2011, 03:26 AM
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The fry will be better off in clean water and Kribensis need clean water just to start the bredding process, just don't suck them up and they will be fine, mom & pop will keep them in the most shaded area of the tank so just go to the other end to syphon.

Post some pics of the fry!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!


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post #8 of 9 (permalink) Old 07-28-2011, 04:49 AM
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I currently have a pair of breeding kribs. They first spawned in a tank that was still in it's cycling period and the fry still hatched and most of them survived to adult hood. Their most recent spawn was in a tank that is being dosed with EI. The fry hatched and even survived a major rescape( i didn't know they spawned). The family is alive and kicking.
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post #9 of 9 (permalink) Old 07-28-2011, 03:41 PM
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Quote:
Originally Posted by eser21 View Post

My understanding of EI is that the tank is always 'overdosed' and needs to be reset once a week... So what happens if for some reason i cant do a waterchange or it goes 10 days? will the ferts reach a toxic level that could harm fish and or plants??
There's no requirement you MUST overdose or add non limiting nutrients.
The levels which are toxic are Extremely High.

So there's ample wiggle room, the suggestions are just guidelines, you can use common sense and tweak as needed. Some add more PO4 the EI suggest, some add less KNO3 since they have ample fish loads, some have 1/2 the light , so they add less. Some progressively and slowly reduce the dose down till they hit a negative response, then bump back up to the next highest ppm dosing level.

It is a myth to suggest that EI requires over dosing, it's just a simple way to ensure and rule out limitation issues and reset a tank.




Regards,
Tom Barr
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