There is a host of bad reviews about the Big Red Heater from Parasine, and a few good ones. I debated for some weeks wheather to buy one or not. I got the chance to grab a shop soiled ex display model for £40 so i went for it.
Now bearing in mind the disasters i had read about, i had to fly high with this beast as it had no instructions. But, applying safety and common sence, filled the tank and let the wick soak for a day. Holding the burner gallery up with a coil spring handle was a faff while i lit it; yes it smoked until the flame had picked up around the wick. I then carefully placed the burner gallery in place and when the inner coils and wires heated up yellow flames subsided until no flame, not even a blue flame could be seen so that indicated to me that the paraffin was vapourising and burning. Then, in small steps turned the wick control lower and lower until heat and glowing coils could be maintained.
This heater is a beast. It chucks out more than enough, probably too much heat for a small greenhouse but if you think carefully of how you are going to light it, control it good results should prevail. When you want to turn the heat off, turn the wick right down. It will pop and flare a bit so lift off the burner gallery (very hot) and blow what bits of yellow flame out.
If you want a press and go heater this is not for you, but if you like old technology and a chance to develop a skill, go for it. Take great care with this Big Red Heater. It is not a candle ,more like the innards of a jet engine without the fans......VERY HOT!