Physan 20

[Masdyman]

Originally Posted by Lars Kurth

Well: I thought I'd give it a try. The reserour in the fogger holds about 1 gallon of water and I added a teaspoon (2.5 ml) as per recommended concentration. It didn't turn into a foamer (-: Of course there is the issue of breathing in Physan fog, so you don't really want to put the stuff in a water butt but only into the foggers reservoir.

If it clogs up, it just has to be cleaned. So far does not look it.

Hi Lars ,i would use the fogger with caution at this time of year in the UK , my fogger hasn't kicked in for a couple of weeks now it does run through humidity stat .So i turn it off completely now until the weather is good again next late spring if we are lucky .

[Lars Kurth]

Hi Lars ,i would use the fogger with caution at this time of year in the UK , my fogger hasn't kicked in for a couple of weeks now it does run through humidity stat

The fogger hardly comes on in the winter: it is on a hygrostat at 50-60% and on a timer ensuring it can only be on in the morning. I would have needed to water the greenhouse anyway and switched the fogger on for an hour instead (in the morning). Mainly as an experiment on the Physan.

Of course in some ways this is much less efficient than watering: leaves and the substrate surface get wet. But with 3 fans and a heater everything dries within 3 hours. But ideal to spread chemicals around the greenhouse evenly.

With my normal settings the fogger only comes on for a a few minutes a day, a bit more when the heater is running all the time and dries the air excessively. That happens, because I mainly grow intermediate to warm plants: night temp 18C, day 24C. When it is cold outside and there is little sun, the heater is on a lot dessicating plants.