Hi guys
Plants have really done well during veg cycle in my greenhouse. The problem is humidity at night time now that they are in flower. Where i am, summer humidity is up to about 90% at night time with temperature between 18-20 degrees celcius. Not sure what that is in farenheit but it is minimum temperature for good growth. I bought a dehumidifier and mounted onto my humidity controller. Day time humidity inside drops to about 50% with max temperature being around 33 celcius. So day time with ventilation running keeps humidity nice and low. Night time ventilation doesnt help as outside humidity is way too high so i close up the vents and let dehumidifier do its thing. The problem is the dehumidifier only drops it to about 80% rh. Greenhouse is 3mx3mx2m or 10ftx10ftx 7ft. I sealed the whole thing up with about 5 tubes of silicon. It has 8 plants inside as well as 3 tomato vines. Are the plants dumping too much moisture at night? They only get 1.5lt each every second day and early on in the day and have not shown any heat or dehydration stress so im not pumping water into the greenhouse excessively and water only ever goes directly onto rootzone of plants, I dont spray water everywhere.
What can i do to dehumidify further bearing in mind i just blew about 300 dollars on a dehumidifier thats supposed to dehumidify 45sq metres. It pulls out about 5 lt of water per night. Have i crammed too many plants into this space? What is a roundabout figure of what a plant transpires in water vapour at night time? The dehumidifier is an olympia spendid aquaria thermo 16 condensor dehumidifier with a built in 1000w heating element. I normally run it on "laundry mode" which is max power non stop. Where have i gone wrong here? What can i do to drop to max 50% rh at night
Plants have really done well during veg cycle in my greenhouse. The problem is humidity at night time now that they are in flower. Where i am, summer humidity is up to about 90% at night time with temperature between 18-20 degrees celcius. Not sure what that is in farenheit but it is minimum temperature for good growth. I bought a dehumidifier and mounted onto my humidity controller. Day time humidity inside drops to about 50% with max temperature being around 33 celcius. So day time with ventilation running keeps humidity nice and low. Night time ventilation doesnt help as outside humidity is way too high so i close up the vents and let dehumidifier do its thing. The problem is the dehumidifier only drops it to about 80% rh. Greenhouse is 3mx3mx2m or 10ftx10ftx 7ft. I sealed the whole thing up with about 5 tubes of silicon. It has 8 plants inside as well as 3 tomato vines. Are the plants dumping too much moisture at night? They only get 1.5lt each every second day and early on in the day and have not shown any heat or dehydration stress so im not pumping water into the greenhouse excessively and water only ever goes directly onto rootzone of plants, I dont spray water everywhere.
What can i do to dehumidify further bearing in mind i just blew about 300 dollars on a dehumidifier thats supposed to dehumidify 45sq metres. It pulls out about 5 lt of water per night. Have i crammed too many plants into this space? What is a roundabout figure of what a plant transpires in water vapour at night time? The dehumidifier is an olympia spendid aquaria thermo 16 condensor dehumidifier with a built in 1000w heating element. I normally run it on "laundry mode" which is max power non stop. Where have i gone wrong here? What can i do to drop to max 50% rh at night