Yeah im struggling to say the least! I think once it's in the air my heat issues may be remedied. Is it even possible to have an extraction fan dump the air from the tent out into said room, and there be only a small difference in inner and outer temps? (does this make sense? I just smoked a doob and I feel im rambling)What he says,
Is there no way for you to hang the fan and filter at the top of the tent similar to what I did, you are really recirculating the hot air back down around the plants.
GR
My First Vert
- Thread starter JDMase
- Start date
gr865
Well-Known Member
Why dump the air back into the room your pulling from? I believe you will still be looking at heat issues and add some humidity issues as well.
Just raise your fan and filter, you will be ok. I like to say solve the first problem first before you change things that my contribute to more problems.
GR
I intake from one room in the house and exhaust to my garage.
It's not ideal but i can't actually do it any other way, my place doesn't have windows... Crazy right?! I just have some small doors which I keep open almost all the time in order to get my fresh air in, and keep temps reasonable.. If I were to move my tent closer to said doors you'd be able to see the tent from the building opposite or the car park below. It's a damn nightmare. Were I to try and intake or exhaust air from said doors Id be looking at maybe 10 metres for each one. I think that would substantially lower the efficiency of each fan im running.
I need a new grow space..
coreywebster
Well-Known Member
JDMase, yeah I hear you on the extension cord daisy chaining, I wouldn't do it with lights but with fans its very low wattage, I have done it in all my grow rooms. Like I say just never with lights.
As for extraction, do you not have a chimney breast in the room? Even if its go no vents in it will of had somewhere. In my room I took out the old vent and made it bigger to put the extraction into, then I have an 8" hole in the chimney at the other side of the breast which goes all the way to the basement, I was going to use an intake fan but its passive at the moe and works well.
Anyhow maybe this isn't possible in the house you have.
Just to point out too, a filter on the floor as said will pull hot air down but it will also pull air in from the easiest place which is the open tent doors or vents at the lower part of the tent. So essentially most of your heat is rising and staying there building up.
Get that fan and filter moved sunshine, an extension cord is really just a long wire divided by a plug with pins to connect the electricity, as long as your not pumping 600w through it theres no reason for it to overheat at all. We are talking about one fan.
The only other option if the girls are getting stressed is less wattage in light. Plants would probably produce better with less wattage if they are happy than with more wattage and stressed constantly.
Good luck with it, fingers crossed you get them temps down.
Edit, JD I just reread your earlier posts, I confused where you said plants were stressed in veg and not so much in flower tent. If temps high point is 82.4f (28C) your not doing to bad.
It used to be folks would say 78-82 was optimum(20years ago) now I see folk having a panic at 82degrees, not sure why. Anyhow, it may not be perfect but should be fine. Still get that fan and filter raised though ey.
As for extraction, do you not have a chimney breast in the room? Even if its go no vents in it will of had somewhere. In my room I took out the old vent and made it bigger to put the extraction into, then I have an 8" hole in the chimney at the other side of the breast which goes all the way to the basement, I was going to use an intake fan but its passive at the moe and works well.
Anyhow maybe this isn't possible in the house you have.
Just to point out too, a filter on the floor as said will pull hot air down but it will also pull air in from the easiest place which is the open tent doors or vents at the lower part of the tent. So essentially most of your heat is rising and staying there building up.
Get that fan and filter moved sunshine, an extension cord is really just a long wire divided by a plug with pins to connect the electricity, as long as your not pumping 600w through it theres no reason for it to overheat at all. We are talking about one fan.
The only other option if the girls are getting stressed is less wattage in light. Plants would probably produce better with less wattage if they are happy than with more wattage and stressed constantly.
Good luck with it, fingers crossed you get them temps down.
Edit, JD I just reread your earlier posts, I confused where you said plants were stressed in veg and not so much in flower tent. If temps high point is 82.4f (28C) your not doing to bad.
It used to be folks would say 78-82 was optimum(20years ago) now I see folk having a panic at 82degrees, not sure why. Anyhow, it may not be perfect but should be fine. Still get that fan and filter raised though ey.
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Will do! Good hustle on keeping up with my Kush induced rambles. I am gonna get that fan up in the air in the big flower tent, the small tent I gave up on, the cheap extractor fan wasnt helping the CMH cool a 60x60x140cm tent barely at all, the plants in there shrivelled within a day. Will get a Low watt cfl for that.
The only reason I say 28c is bad in the big tent is because that's the coolest the tent is with lights on, with the tent open I'll hit peaks of 32-33c, with the tent door shut I'll be hitting 40c.
Always waiting on pay day though, only another 24hours and I can hopefully buy all the things I need. Whoever said this was cheap and easy was wrong haha.
coreywebster
Well-Known Member
Haha, Yeah that's a small tent indeed mate. I started with a 120x60x160 for veg, but I had a 5"ruck cooling it and only a 250mh.
I now have my 315cmh in my veg tent which is 1.2mx1.2m x 1.6m (loft tent to fit my sloped ceiling) Running a 5" ruck and its super cool in there.
Hope you get it all sorted. Don't forget it will pay you back 1000 fold when you get some dank ass nugs to smoke! Roll on pay day!
Hey guys, so flowering is imminent, ive decided to do a staggered perpetual type grow, flowering my Kings Kush and Black Dog out first, then leaving the back wall bare for what will probably be the grapefruit krush next month.
Ive currently got my 600w HPS hanging, with a bare bulb holder on the way, my question is should I also add my 315w CMH?
Should I hang it from the top or also vertically?
Or should I swap the CMH for the HPS?
Ive never flowered with the CMH before but ive heard results are just as good as a HPS, my HPS bulb is just a cheapy anyway.
Taking more clones tonight because im blown away with the KK's vigour. Lovely spicy smells coming from it all the way through veg. Can't wait to try it
Ive currently got my 600w HPS hanging, with a bare bulb holder on the way, my question is should I also add my 315w CMH?
Should I hang it from the top or also vertically?
Or should I swap the CMH for the HPS?
Ive never flowered with the CMH before but ive heard results are just as good as a HPS, my HPS bulb is just a cheapy anyway.
Taking more clones tonight because im blown away with the KK's vigour. Lovely spicy smells coming from it all the way through veg. Can't wait to try it
Here's Kings kush, showing some real unhappiness. I had the dark green leaves for a week and had leached with low nutes, a few days later flushed with just ph tap water, still no improvements. As of two days ago the bottom leaves have begun to yellow. Im unsure if ive gone from nitrogen tox to def or whether I have root rot?
It's even affecting my other plants now. I switched to bloom nutes as I was thinking I had nitrogen toxicity on all my plants.
I am using mykos and azos with every water as of yesterday. Up until then I had only used it as a direct root innoculant when up potting.
gr865
Well-Known Member
Too much N and some mag deficiency?
After a little more research im wondering if im under feeding nutrients. I believe before I was feeding my autos around 1000ppm and with these ive not gone over 700ppm much if at all. I'll be feeding 1:1 grow and bloom at 800ppm from now on and will observe from there on.
Quite possibly, I feed tap water but just got some RO. Should I start off slow with cal mag? Or just feed at a steady rate.
gr865
Well-Known Member
I use GH Cal/Magic and I believe the rate is 5 ml (1 tsp)/gallon. When I use RO or rainwater (my rainwater is 2 ppm) I add tap to bring my #'s to 120 ppm, then begin adding the base nutes. My tap is over 800 ppm so I use it only for this.
I use Canna Coco's line of nutes but I back off of their recommended rates, as I feel they are way high. For example, in veg I will add only 200 ppm of A&B, in flower 400 ppm. Now that rate does not give me the Cal ratio needed. You need around 150 ppm of calcium alone.....so even if when I'm at 200 ppm if I only added 100 ppm of Calimagic, only 75 is calcium so I would still be short. I would need to add approx.140 ppm of Cal/Magic to reach my desired number.
Here is a chart the gives the ratios of Calcium in given ppm of A&B.
This is based on slightly rough math but is very close to correct.
3 ml/gal = .4 ec = 200 ppm with around 44 ppm of calcium
4.5 ml/gal = .6 ec = 300 ppm with around 66 ppm of calcium
6.2 ml/gal = .8 ec = 400 ppm with around 88 ppm of calcium
7.7 ml/gal = 1 ec = 500 ppm with around 112 ppm of calcium
9.2 ml/gal = 1.2 ec = 600 ppm with around 135 ppm of calcium.........
This Calcium information is purely based on a Canna schedule, using CalMagic. As I stated, once you hit around 700 ppm you no longer need Cal/mag additives.
GR
Thanks that's really good information, I appreciate your help.
So I had a look at the bottoms of my cubes.. This is my grapefruit krush, the most root bound, no symptoms showing like the kings kush, but the roots are very similar in colour. Is this root rot or just the staining from nutrients (floranova) and maybe the mykos too? They always seem to leave a brown residue too.
Either buy these now @ 1/2 the price of Samsung H series strips (same as QB's) or wait till Samsung F series are in stock for the same price.. https://www.digikey.co.uk/product-detail/en/bridgelux/BXEB-L1120Z-30E4000-C-A3/976-1502-ND/6236288
THCBrain
Well-Known Member
I would..
Do you think it'll donthe job on its own? I had thought I might have to run one at the top and one below to get the coverage.
There's a few threads over in the led section, you're welcome
https://www.rollitup.org/t/bridgelux-eb-series-build.928676/I'm currently building a cupboard 6ft x 2.5ft x 7ft so my tressiled area will be 6x6 roughly, 2 x walls of 20 x 2ft 3000k strips + 12 x vero decor 18 17E 1750k (was going for the 2700k 97cri v10 chips but they're too small/less efficient). With 20 strips its 300w @ 700ma or 600w max @1400ma.
I'll reply more soon just busy