Help and advice

Hello people,
hope your keeping well. This is my first grow and I thought I brought some really good equipment, but I’m really struggling and would really appreciate some guidance. I brought two Gavita 6/750 DEs, the Gavitas el1 gen 2 controller, the bud box white lined tent 2.4x1.2x2.2. I was advised in a grow shop to buy a 10” fan so I got the EC vector silenced revolution fan, I’ve also got a 8” Ora fan and a crane cool mist humidifier. I’ve been trying to naturally aspirate the tent with 2x 6” ducts and 3x4” ducts. Sounds like a great set up, right? . My problem is HEAT, it currently sounds like I’ve got a tornado next door....the fan it’s self is silent...the sound of it sucking air through a meter long 10” filter trying to keep two Gavitas cool is anything but silent. I think I need an inlet fan but I don’t know what size to get. I’ve got the standard G.A.S controller but there’s a balancer you can buy to run an inlet fan. I don’t want to spend out on another vector fan or the electricity to run it really but I have to do something. I’m thinking of running a Phresh V1 or V2 I think there compatible with the GAS controller? I think a 6” should be enough but I do t want to buy the 6” and realise I needed an 8” to keep the Gavitas cool. The plants are 4 weeks at the moment God knows how the plants arnt going to cook when there taller. Is there anybody on here that knows there onions that can point me in right direction, Ide really appreciate the advice

SamCharman said:

Hello people,
hope your keeping well. This is my first grow and I thought I brought some really good equipment, but I’m really struggling and would really appreciate some guidance. I brought two Gavita 6/750 DEs, the Gavitas el1 gen 2 controller, the bud box white lined tent 2.4x1.2x2.2. I was advised in a grow shop to buy a 10” fan so I got the EC vector silenced revolution fan, I’ve also got a 8” Ora fan and a crane cool mist humidifier. I’ve been trying to naturally aspirate the tent with 2x 6” ducts and 3x4” ducts. Sounds like a great set up, right? . My problem is HEAT, it currently sounds like I’ve got a tornado next door....the fan it’s self is silent...the sound of it sucking air through a meter long 10” filter trying to keep two Gavitas cool is anything but silent. I think I need an inlet fan but I don’t know what size to get. I’ve got the standard G.A.S controller but there’s a balancer you can buy to run an inlet fan. I don’t want to spend out on another vector fan or the electricity to run it really but I have to do something. I’m thinking of running a Phresh V1 or V2 I think there compatible with the GAS controller? I think a 6” should be enough but I do t want to buy the 6” and realise I needed an 8” to keep the Gavitas cool. The plants are 4 weeks at the moment God knows how the plants arnt going to cook when there taller. Is there anybody on here that knows there onions that can point me in right direction, Ide really appreciate the advice

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Is there no way to sumhow tube it outside the tent? I have to I’m running two 600w hps n without it it would run probly 90+ , runs between 78-80 rn til I vent it outside next week , my off temps in the basement here r quite staggered @61 being lowest but average bout 65-66 sumtimes it’s 71

SamCharman said:

Hello people,
hope your keeping well. This is my first grow and I thought I brought some really good equipment, but I’m really struggling and would really appreciate some guidance. I brought two Gavita 6/750 DEs, the Gavitas el1 gen 2 controller, the bud box white lined tent 2.4x1.2x2.2. I was advised in a grow shop to buy a 10” fan so I got the EC vector silenced revolution fan, I’ve also got a 8” Ora fan and a crane cool mist humidifier. I’ve been trying to naturally aspirate the tent with 2x 6” ducts and 3x4” ducts. Sounds like a great set up, right? . My problem is HEAT, it currently sounds like I’ve got a tornado next door....the fan it’s self is silent...the sound of it sucking air through a meter long 10” filter trying to keep two Gavitas cool is anything but silent. I think I need an inlet fan but I don’t know what size to get. I’ve got the standard G.A.S controller but there’s a balancer you can buy to run an inlet fan. I don’t want to spend out on another vector fan or the electricity to run it really but I have to do something. I’m thinking of running a Phresh V1 or V2 I think there compatible with the GAS controller? I think a 6” should be enough but I do t want to buy the 6” and realise I needed an 8” to keep the Gavitas cool. The plants are 4 weeks at the moment God knows how the plants arnt going to cook when there taller. Is there anybody on here that knows there onions that can point me in right direction, Ide really appreciate the advice

Click to expand...

I’m worried bout mine cooking too when the lights r on but I got a big standing oscilating fan in the corner of my 5x5 it helps push out the hot air through my infinity fan and out the tubing on the roof of tent then i have my carbon filter fastened on the end of the ducting sitting on the deep freeze rn

canadiantoker420 said:

I’m worried bout mine cooking too when the lights r on but I got a big standing oscilating fan in the corner of my 5x5 it helps push out the hot air through my infinity fan and out the tubing on the roof of tent then i have my carbon filter fastened on the end of the ducting sitting on the deep freeze rn

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My plants are cooking, I’m running a humidifier flat out and I’m lucky if I see 40%. I find when I turn the 8” Ora oscillating fan on it makes the temperature climb. I’m trying to keep it sub 25C at canopy height as soon as I turn the Ora on I presume it’s mixing the hotter air at the top of the tent? The temperature climbs, the 10”vector extractor fan starts trying to make the tent implode. The lights are only running between 555w and 600w not a chance I’ll get them up to 750 or the 825w there capable of.

What temp is the room its in at? Your ambient air?
Where does the tent vent too?
Where is the thermometer?
You have an intake fan too?

You can add an extra filter of the same size and use a Y duct splitter, splitting the air between the two will decrease the velocity and thus the whoosh sound.

Turn one of the lights off until you can get the ventilation figured out. You having hps is going to be a fight in such a small tent. 1500 watt heater basically.... What you are going to end up doing is prolly having to seal the aircooling for the lights and have a different system for the rooms ventilation.

canadiantoker420 said:

Is there no way to sumhow tube it outside the tent? I have to I’m running two 600w hps n without it it would run probly 90+ , runs between 78-80 rn til I vent it outside next week , my off temps in the basement here r quite staggered @61 being lowest but average bout 65-66 sumtimes it’s 71

Click to expand...

I am venting it out side the tent the extractor fan is in the attic

SamCharman said:

I am venting it out side the tent the extractor fan is in the attic

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I hsve no choice but to vent outside, if you can’t condition your room to lower your temp I’d try to evacuate as much air out of the area man I only got a 6” infinity blowing hot air through 1 long ass ducting both 600w hps are cooltubed together in my 5x5 I just set up the 2nd one other day cuz there day 1 flower now , my temp went from a comfortable 74-78 to stuck at 79-80 all the time lights on now.... I fight to lower it to 78 on temp

SamCharman said:

I am venting it out side the tent the extractor fan is in the attic

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I’m from Canada it’s gonna start getting warm soon too

Budget Buds said:

Turn one of the lights off until you can get the ventilation figured out. You having hps is going to be a fight in such a small tent. 1500 watt heater basically.... What you are going to end up doing is prolly having to seal the aircooling for the lights and have a different system for the rooms ventilation.

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Running one gavita at 555w-600w I don’t need to run the extractor fan the temp was perfect just leaving the side vents open. Running two lights, If I make slight wattage change on the controller it makes huge differences with humidity and temperature in the tent. I never tryed ramping up the setting at one light as they were just seedlings. What do you mean seal the air cooling for the lights? There not in air cooled tubes

coreywebster said:

What temp is the room its in at? Your ambient air?
Where does the tent vent too?
Where is the thermometer?
You have an intake fan too?

You can add an extra filter of the same size and use a Y duct splitter, splitting the air between the two will decrease the velocity and thus the whoosh sound.

Click to expand...

This whole post was pretty much asking what air intake I need....no I don’t have an intake fan. It’s a 10” 100cm carbon filter, it should be plenty big enough In a tent that size I wreckon. The problem is the extraction fan shouldn’t have to start working that hard in the first place

SamCharman said:

There not in air cooled tubes

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Oh, nevermind

SamCharman said:

This whole post was pretty much asking what air intake I need....no I don’t have an intake fan. It’s a 10” 100cm carbon filter, it should be plenty big enough In a tent that size I wreckon. The problem is the extraction fan shouldn’t have to start working that hard in the first place

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Fair enough, it was a long post, I thought I would start with making sure you have the basics sorted out first.

Like your ambient air temp, thermometer placement, making sure the air cant be recycled back into the tent...

Plus you said the whooshing noise was bothering you so I offered a way to lower it.

Normally your looking at 30% cfm less for intake but I would be tempted to get the same airflow and a manual variac speed controller to dial it down to the point you have a small amount of minimum negative pressure.

coreywebster said:

Fair enough, it was a long post, I thought I would start with making sure you have the basics sorted out first.

Like your ambient air temp, thermometer placement, making sure the air can be recycled back into the tent...

Plus you said the whooshing noise was bothering you so I offered a way to lower it.

Normally your looking at 30% cfm less for intake but I would be tempted to get the same airflow and a manual variac speed controller to dial it down to the point you have a small amount of minimum negative pressure.

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It’s my first grow bud, I don’t know what I’m doing. Trying to set it up with the minimal electricity usage “was” key in the beginning. That’s why I spent £525 on a 10” extractor fan. I’ve got a GAS ec digital fan controller, I brought the balancer for it this morning so I should be able to set up negative pressure. Do you really think I need I a 10” inlet fan? Shorly I’ve got big issues if I need a 10” intake, I might as well chuck these autos in the garden and start again ‍

SamCharman said:

It’s my first grow bud, I don’t know what I’m doing. Trying to set it up with the minimal electricity usage “was” key in the beginning. That’s why I spent £525 on a 10” extractor fan. I’ve got a GAS ec digital fan controller, I brought the balancer for it this morning so I should be able to set up negative pressure. Do you really think I need I a 10” inlet fan? Shorly I’ve got big issues if I need a 10” intake, I might as well chuck these autos in the garden and start again ‍♂

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No worries.

I looked that fan up and controller because Its new to me. Though I used to have an 8" fan similar.

It moves some serious air, you shouldn't even need a fraction of that airflow to run both your lights.

So no I don't see you needing a 10 intake, but I didn't know you were in the UK when I answered and figured you must be somewhere hot and needed a lot of airflow , which is why im asking you about your air temp before it goes in your tent, been your ambient air temp.

Its also why im saying make sure your thermometer is not in direct light.

It shouldn't take anywhere near the airflow that fan can give to keep 1500w of lighting under control.
I used to do it with an 8" in the same space which only had 900m3ph rating.

End of the day you kind of need to know how much of that fan power is needed, your small passive intakes are not going to cut the mustard. Though ive never had issues running passive intakes in 4x8 in England.

Im not asking you pointless questions, im trying to find out if you have things set up properly so you get proper air temp reading and so your hot air is been vented to the right place so is it NOT getting recycled back into your tent ( I edited my above post, it should of said cant, not can)

If your air is not been sent somewhere where it can not be drawn back into the tent then all the nice fans and controllers are not going to help at all.

If everything is set up right.
Fan takes air out of the space the grow is in, without it been drawn back into the same room or tent, plus the room itself can draw fresh new air in to feed your tent , plus your thermometers are not under your lights then any intake is better than nothing and if its not enough your vents and lower duct socks open will allow the extra needed.
Its hard to put a figure on it without knowing the exact m3ph or cfm your fan is going to be running. Like I say its 30% less than your extraction will be.

You do not need to buy a £500 fan for intake, or for anything, they are not any quieter than most other fans, they are just an rvk or similar in a silencer and the silencer doesn't really do much.
All you need is a standard ruck, can or rvk and a voltage speed controller.

Anyhow if I were you I would get both your lights on, place thermometers up the wall out of direct light, put your circulation fan on and open all your tent doors and see what speed it runs to get your temps where they need to be. From there you can guestimate how much airflow is needed and get an intake capable of roughly keeping up.

I apologise if you think im been less than helpful here, I want to make sure you have your shit sorted out properly because something doesn't add up. My main concern is if that hot air is been pulled back in to the tent.
You also mentioned the attic, so im wondering if the whole set up is in the attic?