Originally Posted by zof
Very cool, I see you use the jar in tank method for the early fry, read about that a few weeks ago, pretty neat. Be interested to hear what volume of tanks you use for how many/how old fry also what your water change and feeding schedule is like.
To start, once I get a spawn to wigglers and off the breeding slate, they go into one of the fry rearing jars. I use three of these within a 30gal tall. Each jar can have about 250 fry, so up to 750 in the thirty gallon at up to half pea size. As this tank has excellent bio filtration, I do a 30% water change 2-3 times per week.
Once they are about half pea size, each jar gets emptied into a 10 gallon tank. They stay in here for a week or two, until they are above pea size. The 10 gallon tank makes it easy for them to find the food, but also requires lots of water changes. I try to do a 50% change every day or every other day on the 10 gallon tanks.
At above pea size, each spawn (~250+ fish) goes into a 30 gallon. Here 50% water changes every 2 days. I raise them here to just about dime size then I do my first cull.
After the first cull they go into 75 gallon grow out tanks where I continue to cull as I grow them out to quarter+ size for sale. With large water changes and good bio filtration, I can easily grow out (to quarter size) 100+ angels in each 75 gallon tank.
As for feeding, they get hatched baby brine shrimp until they go into the 30, where I make the transition to microgrind and fry starter pellets. I feed only 2 times each day, even for the newly hatched fry.
With my current set up I can leave the fishroom with no feedings to go on vacation for up to 7 days, even with batches of newly swimming fry with essentially no losses. I just turn the heat down from 80 to 70, and they do fine.
Also, my spawns average in the 250-300 fish range. But there are differences. I've raised spawns of 100 fish, as well as spawns of more than 500. Anything under 100, I don't bother with and leave then as a snack for the parents.
Here's a spawn on the large side that I pulled the other day. Look closely to see the eggs on the slate.
Hope this helps