250w CXM22 Dresser

HazednConfused

HazednConfused

Well-Known Member
This is my first time using cob lighting, which I feel shits on my previous cfl lights. It's a work in progress. I have 4 CXM22 3500k 90 cri Cobs driven by a 240h 54B meanwell driver on a frame I constructed. Ideal holders/adapters, Angelina reflectors, 120mm sinks, 100k pot, wired in parallel using ideal holders. I need to figure out the intake/exhaust carbon filter situation. Have some flat white paint to throw in there as well. I'll be using this for my future grows, as well as my current GG4 clone.
 

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HazednConfused

HazednConfused

Well-Known Member
GrnMonStr said:
Nice, I like it. How hot do the heat sinks get, can you hold your hand on them after they been running for a while?
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Thanks bro, yeah I can hold my hand on them. they get about 110 f, and that's after letting running for about an hour; that's read with an infrared thermo.
 
MonkeyPickAss

MonkeyPickAss

Well-Known Member
visajoe1 said:
rofl. sure it does. been doing it since forever
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We'll have to agree to disagree. If they worked dont you think everyone would be using them? They have almost zero static pressure and will NOT be effective paired with a carbon filter.

I would get http://a.co/fNgMK4r and http://a.co/6eeudDv Ive been using that combo for around a year in my small tent and its been perfect.
 
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HazednConfused

HazednConfused

Well-Known Member
MonkeyPickAss said:
We'll have to agree to disagree. If they worked dont you think everyone would be using them? They have almost zero static pressure and will NOT be effective paired with a carbon filter.

I would get http://a.co/fNgMK4r and http://a.co/6eeudDv Ive been using that combo for around a year in my small tent and its been perfect.
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Believe me, I've almost ordered a legit inline so many times from Amazon but then I chicken out because of the space limitations. But, but I definitely want something that's going to dump air.
 
visajoe1

visajoe1

Well-Known Member
HazednConfused said:
Yeah, I was definitely planning on doing passive intake. How many cfm should the booster be?
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your space (31"×15"x40") is about 10 cubic feet. any fan loses cfm when pulling through a carbon filter. so, a 4" booster fan pulls 100cfm max. Assuming 50-70% cfm loss from pulling through carbon filter, would leave you with 30-50cfm. That would mean your tent changes air 3/5 times per minute. Plenty of airflow.

you can get whichever inline fan you want. the booster fan will just save you considerable space
 
MonkeyPickAss

MonkeyPickAss

Well-Known Member
HazednConfused said:
Believe me, I've almost ordered a legit inline so many times from Amazon but then I chicken out because of the space limitations. But, but I definitely want something that's going to dump air.
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You could grab this, https://jet.com/product/Costway-4-Inch-Inline-Fan-Hydroponics-Exhaust-Fan-Duct-Cooling-Fan-Strong-CFM/b406965703bd4a2dbcc82e68ef578014 You get 15% off your first 3 orders too so that brings down the cost a bit. I stand by the carbon filter recommendation though.
 
HazednConfused

HazednConfused

Well-Known Member
visajoe1 said:
your space (31"×15"x40") is about 10 cubic feet. any fan loses cfm when pulling through a carbon filter. so, a 4" booster fan pulls 100cfm max. Assuming 50-70% cfm loss from pulling through carbon filter, would leave you with 30-50cfm. That would mean your tent changes air 3/5 times per minute. Plenty of airflow.

you can get whichever inline fan you want. the booster fan will just save you considerable space
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Thanks, space is precious to me right now! As long as it can keep the temp in check and pull through a filter I'll try it.
 
HazednConfused

HazednConfused

Well-Known Member
visajoe1

visajoe1

Well-Known Member
HazednConfused said:
Thanks, space is precious to me right now! As long as it can keep the temp in check and pull through a filter I'll try it.
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you'll be fine, assuming the temp outside the tent is good. my tent is 27 cubic feet, using a 6" booster fan (240cfm) and carbon filter. Temps inside tent is 2.5-4 degrees above room temp. I'm running 300w of cob lighting
 
HazednConfused

HazednConfused

Well-Known Member
visajoe1 said:
you'll be fine, assuming the temp outside the tent is good. my tent is 27 cubic feet, using a 6" booster fan (240cfm) and carbon filter. Temps inside tent is 2.5-4 degrees above room temp. I'm running 300w of cob lighting
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Good info, I keep the ac blasting in my house, temps stay 70-72. I was debating getting this TerraBloom 6 Inch Duct Fan “LowNoise Series”, 188 CFM, 26W, Extra Quiet Mixed Flow Booster Fan For Intake and Exhaust https://www.amazon.com/dp/B01M2XG0E1/ref=cm_sw_r_cp_apa_hEBpzb1J1WEH6
 
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