Below Zero outcomes
Hope all are well this Holiday Season. The Plants and Fish have done amazingly well thru the recent below zero cold weather.
I put a 1000 watt heater in the fish tank and it was able to keep the water at or above 75deg. In my 12 x 20 hoop house the only heat available is the sun and the water mass. As I said in an earlier blog the tomatoes froze. The leaves froze above about 2ft. Since my plants were about 6ft tall this did a lot of damage and I took them out of the system.
What I am discovering is the heat coming off the water seems to be able to keep the air mass and the plants above freezing for a short vertical distance. I even put some new starters in during this weather and they have done very well.
Since I did not originally design the system to run year round (Just extend the season) I am very pleased to find that a floating raft system is very well suited to growing in cold weather.