Cool growing indoors

[Tindomul]

Yea, maybe the airstone is enough. Very nice group of plants, good luck with them. I had never given them a second look. Now I am really interested.

[Norberg]

Tindmodul of course you should try some Disas!

[Tindomul]

They look like supersized Masdevallias. You're making me drool and you are such an enabler!

[rockyfarm]

I'm growing indoors and using a 'heat exchanger' for cooling. Basically, this is just a thermostatically controlled blower forcing air from the grow room through flexible aluminum dryer vent ducting placed in a cool site, and back into the grow room. This keeps my humidity up. I'm not getting into the 50's, but could if the ducting was looped outside and back.

[Orchid Whisperer]

Originally Posted by Norberg

Thanks!
I use a lokal Swedish fertiliser called Blomstra. I aded the backside of the botle with the listed content. I use this for al my plants.
No i havent got any hybrid called Sunset. Do you have any link to a picture?

Looks like a good fertilizer blend.

[Tindomul]

Originally Posted by rockyfarm

I'm growing indoors and using a 'heat exchanger' for cooling. Basically, this is just a thermostatically controlled blower forcing air from the grow room through flexible aluminum dryer vent ducting placed in a cool site, and back into the grow room. This keeps my humidity up. I'm not getting into the 50's, but could if the ducting was looped outside and back.

Absolute genius. Do you have a photo of that? I need a little help seeing it in my mind.

[rockyfarm]

No photo; the duct is 4" diameter - (2) 8' sections https://www.walmart.com/ip/Deflecto-...a-x-8/24250585. These are connected by a more flexible duct (https://www.walmart.com/ip/Deflecto-...4-x-5/17165195). A Fantech blower resides in the grow room and the semi-rigid aluminum duct exits the room near the ceiling (hot air) and re-enters near the floor where it is connected to the blower. Very simple. The blower is plugged into a thermostat and timer so I can cool at different times of day/night.

[Tindomul]

Ok kool. Where does it go that the air gets cooled? Are there more parts to this in the cooling space? How long does the air stay in the cool space (what length of the metal duct
is passing through the cold space)?

Sorry for the questions, but my mind is thinking about how to miniaturize this for a terrarium.

[rockyfarm]

I was going to have the ducting outdoors but that would provide more chilling than I need, so it just runs through my grow room wall into the rest of my basement and back. In warm weather the grow room gets to the low 80's and the basement is in the mid 60's, so one thermostat controls the excessive heat in day. At night I run it under another thermostat to insure the grow room chills to 65, and I get a 15 degree range day/night. The duct is actually just a loop about 20' long. There are a few 4" metal connectors and clamps I got at Lowes in the ventilation section. The blower moves the air nicely, probably at about 70 cubic feet a minute. The nice thing is the control it gives; much less maintenance than opening and closing a window in the grow room.

[estación seca]

People chill aquaria and terraria by pumping water in submerged tubing between the tank and a bucket or barrel filled with ice and water. The cooling circuit is separate from the water in the aquarium or bottom of the terrarium.