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Apologies for the photo spamming, literally just woken up :sleep:

Hey guys I have done a bit of digging in the sticky threads but can't find an answer I can be sure of, hence coming here. Ambient temperature is about 21 degrees, and radiant temperature is 31. Plants are on 1.0 EC canna nutrients feed on a wilma system every three hours. I increased the...

I have a 5" ruck on the intake, it's already on a variac controller, it's the hum of the air I want to reduce, already about to install 90 degree fabricated bends too so the duct can have straight runs. I cannot explain how much I hate acoustic ducting :/

I intend to install this on my intake line and wanted to install it onto my aircooled hoods that draw air through my carbon filter at the top of the tent, through the lights and then up to my external vent. This issue is the stuff is a pain in the ass to manipulate. How can I install it on...

That's exactly what I am doing now. I have a fan diffusing that air across the underneath of the lights where the radiant heat hits the plants. I just hope that colder air isn't going to upset them into thinking it winter and hence cause stress / prevent growth.

The tent is indoors. I've tried air cooling the hoods with air from outside and the temperature in the tent is 30 C - intake from outside cools the tent down to 24 C which is obviously better. There is a CF filter attached to the exhaust venting the hot air at the top of the tent. I suppose...

Hi everyone I live in the UK and as it's minus -5 outside, by the time my intake gets the air into my tent the temperature of it is 6 degrees. The steady overall temperature of the space is 24 - 25 degree with the lights on top. I suppose aside from fan speed controllers (it's already on a...

Hi everyone I live in the UK and as it's minus -5 outside, by the time my intake gets the air into my tent the temperature of it is 6 degrees. The steady overall temperature of the space is 24 - 25 degree with the lights on top. I suppose aside from fan speed controllers (it's already on a...

Hi could you delete my threads please. http://rollitup.org/t/first-grow-first-diary-g13-labs-ww-in-4-pot-wilma-comments-welcome.950494/ http://rollitup.org/t/r-w-roots-showing-when-to-transplant.950651/ http://rollitup.org/t/how-when-to-repot-clay-pebbles-without-damaging-roots.951171/...

I'm sure running in at 170v, 625m3/h (469m3/h after subtracting resistance), would be fine for the 600m3/h rated carbon filter, if I end up with temperature issues (running two air cooled hoods, so this is more summer temperatures) I wanted to be able to crank up the exhaust fan to maximum and...

This took a long time to work out the actual CFMs from my exhaust fan using a variac controller, I know I could just get a 800m3/h filter but wanted to know if my thinking was sound...

800m3/h exhaust fan on a 600m3/h carbon filter... Tent > Filter > Ducting > Air Cooled Hood > Ducting > Air Cooled Hood > Ducting > Fan > Ducting (Out) I know you're not meant to oversize your fan, but I was thinking that the fan, even running at full speed, would surely have dropped about...

Wicked. Thanks a lot !

I have an 800cfm Rhino Fan. I use it with a variac controller, it puts out about 400cfm when on it's second setting (out of five). If I use a carbon filter rated for a 800cfm, with a fan working at 400cfm, will the filter still be effective 1? I figured it will be drawing the air through the...

Hi Could you delete my threads please. /t/critique-advice-required.949744/ and /t/variac-speed-controller-on-fan-whats-the-output-now.950079/ Thanks in advance K