My first batch started running into trouble as well. Since then I only put food in front of them for 12 hours a day (after the 3rd week). Seems to help with the health issues but they do grow a bit slower. I'm not in a hurry so I'll use a lower protein mix.
If its hot and they are under a tarp, a slow mist of water on top of tarp keeps things much cooler under the tarp. I used a fogger hose attachement.
If its hot and they are under a tarp, a slow mist of water on top of tarp keeps things much cooler under the tarp. I used a fogger hose attachement.