d42zero
Well-Known Member
Quick update, watered at lights on last night with 1.5L nute solution split between the three plants, ended up with a tiny amount of runoff from two of the three.
Runoff isn't an issue for me as I have my plants in trays but up on trivets, so there's a ~30mm gap between the bottom of the pot and the tray as you can see here:
Here's a photo of the leaf yellowing/browning, this is plant #1:
Plant #2's leaves are curling down a bit, different to the others:
And plant #3 (the one that struggled to push its seed husk off) is probably the healthiest looking of all:
And here's a photo of the full setup, 315W LEC in 1200x1200 tent, with a humidifier and a tower fan:
Min/max temps at the top of the tent (not under the lights) are 18degC-25degC, RH is 50%-70%. The smart pots full of coco must be pumping a ton of water into the air, humidity was 25-35% at seedling stage (which is why I bought the humidifier) but now I'm actually having trouble keeping it below 80%. I currently just vent the air into the room and allow it to recirculate, but now I've transplanted to the big smart pots I have to open the room up a couple of times a day to keep the humidity down! I'm going to look into getting either a dehumidifier that I can vent out the window, or a portable reverse cycle a/c unit.. I've been wanting to buy one for a while now and since it's winter here I should be able to get one nice and cheap I can vent the tent air directly out the window, but being winter I feel like I'm probably better off venting the heat from the lights back into the room. An A/C or dehumidifier will vent air out but won't do it constantly, which I think will make it easier to keep those temps up in the 20s.
This should be my last long post here, sorry to hijack things! I'll go and start up a grow journal and link to that if I need anything more.
Thanks for all the valuable info so far in this thread, it's fantastic to read through!
Runoff isn't an issue for me as I have my plants in trays but up on trivets, so there's a ~30mm gap between the bottom of the pot and the tray as you can see here:
Here's a photo of the leaf yellowing/browning, this is plant #1:
Plant #2's leaves are curling down a bit, different to the others:
And plant #3 (the one that struggled to push its seed husk off) is probably the healthiest looking of all:
And here's a photo of the full setup, 315W LEC in 1200x1200 tent, with a humidifier and a tower fan:
Min/max temps at the top of the tent (not under the lights) are 18degC-25degC, RH is 50%-70%. The smart pots full of coco must be pumping a ton of water into the air, humidity was 25-35% at seedling stage (which is why I bought the humidifier) but now I'm actually having trouble keeping it below 80%. I currently just vent the air into the room and allow it to recirculate, but now I've transplanted to the big smart pots I have to open the room up a couple of times a day to keep the humidity down! I'm going to look into getting either a dehumidifier that I can vent out the window, or a portable reverse cycle a/c unit.. I've been wanting to buy one for a while now and since it's winter here I should be able to get one nice and cheap I can vent the tent air directly out the window, but being winter I feel like I'm probably better off venting the heat from the lights back into the room. An A/C or dehumidifier will vent air out but won't do it constantly, which I think will make it easier to keep those temps up in the 20s.
This should be my last long post here, sorry to hijack things! I'll go and start up a grow journal and link to that if I need anything more.
Thanks for all the valuable info so far in this thread, it's fantastic to read through!