Broseidon
Active member
Hi there folks,
my future grow site is in a basement.
I measured a base RH of 60% but we recently had fog, it's winter and I measured a max 75% RH during that time.
Now for clones, mums and veg this should be fine from what I understand.
But for flowering this is definitely too humid.
Will I be able to keep RH levels at acceptable levels for flowering just through the heat from the 600W HPS and air movement (filter/scrubber)?
Or do you guys think a dehumidifier is needed for the flowering tent?
I am also planning to have my "dry tent" with its own scrubber and filter in the same room.
60-75% RH is definitely too high for drying and from what I could gather it is at the level where I start risking mold if I don't combat it.
Again the question: Scrubber/fan enough to get RH down to acceptable level?
Any way to know that in advance or do I just have to test?
If I need a dehumidifier for both the flowering tent and the dry tent, I would just buy a bigger one and lower the RH of the entire room in the basement.
Then I use the pre-warmed exhaust air from the flowering tent as the intake air for the veg tent and put a plate/bowl of water in there to keep RH for clones, mums and veg a little higher.
Also:
Do you guys think I should install a heater in the room? Right now in winter, temperatures are around 10 °C. They could drop even lower and also be at that level anytime from October-April...
The tents will also stand on a tiled floor that will radiate cold from the floor in these months (in the summer all that cold stuff of course will be good for the plants... basement ).
The way I see it, a heater for the room the tents are in would help provide a basic temperature in the winter so it doesn't get too cold (which would slow down veg considerably since there will only be fluorescents in there, flower probably can handle the low temps with the HPS running and heating the place up).
It would also be likely to drop overall RH in the room considerably.
What do you guys think?
my future grow site is in a basement.
I measured a base RH of 60% but we recently had fog, it's winter and I measured a max 75% RH during that time.
Now for clones, mums and veg this should be fine from what I understand.
But for flowering this is definitely too humid.
Will I be able to keep RH levels at acceptable levels for flowering just through the heat from the 600W HPS and air movement (filter/scrubber)?
Or do you guys think a dehumidifier is needed for the flowering tent?
I am also planning to have my "dry tent" with its own scrubber and filter in the same room.
60-75% RH is definitely too high for drying and from what I could gather it is at the level where I start risking mold if I don't combat it.
Again the question: Scrubber/fan enough to get RH down to acceptable level?
Any way to know that in advance or do I just have to test?
If I need a dehumidifier for both the flowering tent and the dry tent, I would just buy a bigger one and lower the RH of the entire room in the basement.
Then I use the pre-warmed exhaust air from the flowering tent as the intake air for the veg tent and put a plate/bowl of water in there to keep RH for clones, mums and veg a little higher.
Also:
Do you guys think I should install a heater in the room? Right now in winter, temperatures are around 10 °C. They could drop even lower and also be at that level anytime from October-April...
The tents will also stand on a tiled floor that will radiate cold from the floor in these months (in the summer all that cold stuff of course will be good for the plants... basement ).
The way I see it, a heater for the room the tents are in would help provide a basic temperature in the winter so it doesn't get too cold (which would slow down veg considerably since there will only be fluorescents in there, flower probably can handle the low temps with the HPS running and heating the place up).
It would also be likely to drop overall RH in the room considerably.
What do you guys think?