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View Full Version : How many fry per 100 G



BurtonKoi
06-08-2009, 01:41 AM
So, I was wondering, how many fry per 100G water to hatch and raise to what size?

Super Kindai
06-08-2009, 09:29 PM
So, I was wondering, how many fry per 100G water to hatch and raise to what size?
it' all up to you......

About 20,000 fry in a shallow (1 to 1 1/2 foot ) field pond of a quarter acre wide is common number for pro-breeders in Japan.

On the other hand, for a size of fry, a couple thousands is easy in 100 G, I raised about 200 (2" - 2 1/2" size) babies in a 125 G during last winter.

Midorigoi
06-08-2009, 09:50 PM
Woa! :eek1: How many water changes were you doing??

Super Kindai
06-08-2009, 10:52 PM
Woa! :eek1: How many water changes were you doing??
everyday....:D:
P.S) when they grew a few inches more, about 150 lower grade ones were rehome to other place though.

BurtonKoi
06-09-2009, 02:44 AM
it' all up to you.......

I wish it was up to me, I just had a massive die off of 2 day old fry. I think I had wayyyyyyyyy too many eggs in the 250G. Now ammonia is through the roof. :no:

Super Kindai
06-09-2009, 02:19 PM
I wish it was up to me, I just had a massive die off of 2 day old fry. I think I had wayyyyyyyyy too many eggs in the 250G. Now ammonia is through the roof. :no:
I am sorry to hear that. ammonia is the most typical problem but what is the source of ammonia in your tank?

how about this way of thinking......
As a roughly measurement, it is said that a SAKE cup can holds 10,000 fry. then a sake cup holds about 15 cc water = 15 grams = .53 Oz = a 4 inches koi. So, a total volume of 10,000 fry is same as a just 4" size koi weight/volume in a 250 gal. container.....

BurtonKoi
06-09-2009, 04:09 PM
I think I did not have enough O2. When the die off happened, that created an instant overload of ammonia. I really packed in the eggs since we had so many this year. I have since removed as many dead ones as I can as well as all of the algae I had in there. Ammonia is about gone by doing a constant fill/drain line and I threw in some binder. Things seem better today.

goldfish321
06-12-2009, 02:31 PM
I have been eager to raise fry but since I failed with my last spawn i haven't been able to get any more eggs.

I am willing to even buy some if possible.

BurtonKoi
06-15-2009, 03:27 AM
I dont have anymore eggs, but I have about 5000 fry, at least. They are doing well now that things are under control. I think this is day 10. If I knew how to ship, I would send ya a bunch.

goldfish321
06-15-2009, 05:52 PM
5000... you counted right?:D:

post pics

BurtonKoi
06-16-2009, 12:51 AM
I will post some. I say 5000, cause it is eggs from 6 females. It looks like a million, but I am telling myself there is only 5000. ;)

tdmeckle
07-25-2009, 09:07 PM
I think I did not have enough O2. When the die off happened, that created an instant overload of ammonia. I really packed in the eggs since we had so many this year. I have since removed as many dead ones as I can as well as all of the algae I had in there. Ammonia is about gone by doing a constant fill/drain line and I threw in some binder. Things seem better today.

Any Reason for your concern over the algae? Just curious, I figured if anything algae would simply absorb nitrate.

BurtonKoi
07-26-2009, 05:31 AM
just the amount of O2 it intakes. It was thick as matting. Since removing it, I have had no problems.

tdmeckle
07-26-2009, 04:01 PM
Won't algae overall give off oxygen. I understand that if you have alot, it could use oxygen during the dark cycle at night and it could leave you with lower morning oxgyen but I guess I never thought it would do too much. Good to hear your problem free.