ernieq
New member
What he ^^^^^ said.
I use 3 layers of just plain 20lb copy paper on the light. The light stays on for 24 hours. Straight, then 15 hours on, 9 hours off until after meta. I have the tanks convered with black plastic garbage bags in all sides except the top. After they get past meta, I remove the front one, and then after 20 days I remove the rest.
For the Temperature question for Marcin. Temperature is exactly the same as in the hatch tank, 82 F. Once they are in the hatchery, I try to keep it around 82 for good growth, but it fluctuates +/- 2 degrees and I have no issues. Cooler temperatures will delay meta and growth. You need to make abosolutely sure you keep the salinity and other parameters as stable as possible until after meta. No massive water changes. I do about 10% every 3 days and I drip in the water from the hatching tank. I usually do a fresh RO water drip to compensate for evaporation. About 1 drop every 5 seconds in my case, but you will have to experiment depending on your conditions. I also dose with chloram x to keept the ammonia under control, that is probably the biggest killer other than total negligence.
I use 3 layers of just plain 20lb copy paper on the light. The light stays on for 24 hours. Straight, then 15 hours on, 9 hours off until after meta. I have the tanks convered with black plastic garbage bags in all sides except the top. After they get past meta, I remove the front one, and then after 20 days I remove the rest.
For the Temperature question for Marcin. Temperature is exactly the same as in the hatch tank, 82 F. Once they are in the hatchery, I try to keep it around 82 for good growth, but it fluctuates +/- 2 degrees and I have no issues. Cooler temperatures will delay meta and growth. You need to make abosolutely sure you keep the salinity and other parameters as stable as possible until after meta. No massive water changes. I do about 10% every 3 days and I drip in the water from the hatching tank. I usually do a fresh RO water drip to compensate for evaporation. About 1 drop every 5 seconds in my case, but you will have to experiment depending on your conditions. I also dose with chloram x to keept the ammonia under control, that is probably the biggest killer other than total negligence.