Please clarify. I'm in hydro with a recirculating hybrid drip/spray thingee. Does this matter for the stand?Quote:
Originally Posted by Forwhat420
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Please clarify. I'm in hydro with a recirculating hybrid drip/spray thingee. Does this matter for the stand?Quote:
Originally Posted by Forwhat420
OK, I'm seeing it now. duh. But just going straight through the wall on the bottom and straight out the top is not possible for my set up. For one thing, my plants are above the cloning area and ballests and stuff.Quote:
Originally Posted by Opie Yutts
well only if u can set the stand up. maybe not invest in bigger fan if u can get those bends out cuts ur cfm down to less than half of the rating of fan. u say that u have a room in the 80s? can u some how create an intake at the top of ur room to run across your lights out the other side of your room? you could use air conditioner vent covers to look inconspicuous and do u vent to the outside of your house? then use ur other fan to concentrate on pulling more air into the room from the 81 degree room?
if u can set the hydro set up on a stand i mean. i dont know about taking the air conditoner apart but if u know how go for it. sry keep posting back to back but thought process is a little corrupt right now
Opie - This thread is really confusing. From what I can understand, you are talking here only about the ducting, fans etc. that cool your light. Is that correct?
Below is a pic of my lights and vent. I suck air through two cool tubes using a 6" fan that then exhausts through a charcoal filter. (Suck or push seems to be a constant debate here, with no real consensus except that some applications may require one or the other.)
Anyway, I am sucking the grow room air through my lights, thereby pulling fresh outside air into the grow room. It seems to me that, if your ambient outside temps are around 81, you want to get as much of that 81 air into the grow room as possible, not just pass it through your light. So, for now, lose the intake duct and just suck air from the grow room and let the fresh air get into your grow room from the hole you were using for the intake duct.
All of that being said, once you start using co2, you need to keep the room sealed, but you can also get away with higher temps. However, for the time being, using your light venting to also vent the room should pull your temps down and is a very simple task.
I hope this helps. :thumbsup:
PC :smokin:
i dont have experience with a 600watt. but dont you need a bigger fan than 270 cfm to cool that down correctly?
also: there seems to be a lot of bends in your ducting. a lot of air flow is lost during extreme angles......is there anyways to cut all that other curbed ducting out of your setup?
This is very true! the less bends the better. makes a huge diffrence. :)Quote:
Originally Posted by keeko
That makes a lot of sense, and sorry for the confusion.Quote:
Originally Posted by PharmaCan
I guess I just wanted to know where in an 18 foot run of duct that has a light in the middle of the run, would you place a 275 cfm and a 175 cfm fan to get the best cooling possible. Forget all that other stuff, if someone could just answer that it would be great.
Your recomendation is actually the first thing I tried years ago, and it didn't work, probably because I didn't have enough total cfm, and I was using a carbon scrubber inside a pre-filter. I only want to redo my closet one last time, and I need to consider the co2. My ducts are behind a wall! As you probably already know, you can't use co2 while you are exhausting and intaking air, or it will be a complete waste. And using 600w in a small space makes it heat up almost instantly, allowing no time for co2. Therefore I guess I decided that I need two intakes and exhausts, one each for the light and one each for the room. That way I can turn off the room exhaust for a few minutes every hour or so, and run the co2 generator until it gets too hot again. The cooler I can keep the lighting duct run, the longer I can have co2 in the room, and the bigger my buds will be (at least I think that's the goal here).
Keeko, you are probably right about 270 not being enough cfm, and I was trying to get away with 175 cfm. That's why I am thinking of putting the 270 just before the light, and the 175 at the very end of the run.
This really sucks. So in order for me to have co2, I'm going to end up with 5 fans, just in the flowering section. The two mentioned above for the light, one room intake with a 4" 175cfm, one room exauhst with carbon scrubber about 320 cfm, and one oscillating fan gently moving air around the top of the plants. Oh well, at least the whole set-up in the veg section, including cool tube, works great with one 8" fan.
I believe it was Latewood, a year ago or so, who said cool tubes are great if you don't mind the $500 for fans that you need.
There were a couple posts today by a "SpaceNeedle". Hunt him down and rattle his cage. He's a heating and A/C guy and should be able to answer your questions.
PC :jointsmile: