good tips , not aware of a night time lower UK tariff ? I would recommend a low wattage greenhouse tubular heater (160w) not a 2K like the one you have in your video . Electricity prices are only going one way so the industry needs to think about low wattage products a lot more now
Soleo 500watt hang up heater with a lighthouse wireless thermostat controller sound like a good pairing and cheapest option. Only thing I guess is your tent would get build up of condensation but a decent 16 inch fan (Rowenta VU5870 or VU5840) on sleep mode (17 watt) would move the air around. Otherwise as hot air rises to the top of the tent and if you don't have central heating on and it's cold in the room the tent is in surely leads to wet walls inside the tent? Maybe adding a blanket or quilt on the roof of the tent helps to insulate lost heat through the roof.
I have a grow tent In my shed and I'm using hps so I'm good when the lights are on. but I'm trying to figure out the safest heater for when lights are off any ideas?
EC fans are awesome, and yes a good controller on there will accurately control fan speed based on temperature. These controller basically increase air exchange if the temperature gets too hot and decrease it if it gets too cold. They cant generate heat though, so in the context of this video you will still need to add heat somehow.
