Cannabis Grow Rooms

Just picked up my first dehumidifier i had no clue as to how they work i thought they ran cool air and some how removed the water from the air, mine is like a small heater, RH was 86% and it is now 69% over around 15mins unsure what to set mine at, i bought it to stop the moldy buds i have encountered in the past it uses quiet a bit of power close to 400watts so i think i may only need it in the last 2 weeks of flower it was under $100 or lose big main colars

What dehumidifier would you guys recommended. My gr is 2.4x2.4 2.4high. I always have mould issues even with my ventilation in and out. Not sure what dehumidifier to get. Could you guys recommended one?

Hey guys thought i would put up a thread for us do it your self growers based on LED lighting technology, I'm using the following COB CXB3590 LED kit from Cutter Electronics 2x 12cm computer fans just basic models, these are to cool the LED drivers, one fan per each driver 2x OSRAM LED drivers from RS Electronics they are the 50watt 36volt models 1x 12volt 6amp power supply to drive the fans you can buy these and the fans from ebay some basic wire connectors, wiring, joiners, extension leads cut to make power leads, some aluminium angle from bunnings and zip ties on testing i am getting 139,000Lux which in LED is 250umol at 70cm from the lamps, these lamps in …

Hi, does anyone know if the GT Proline ballasts and lamps are any good ? im looking at this kit on ebay, 600W DIGITAL LIGHT KIT GT PROLINE DIGITAL BALLAST + GT HPS & MH LAMPS + AIRCOOLED COOL TUBE WITH DIMMABLE 250W/400W/600W/600WSL SWITCH USE EITHER A 600W LAMP IN ANY DIMMING SETTING, OR A 250W LAMP ON THE 250W SETTING OR 400W LAMP ON THE 400W SETTINGits $315

I can remember seeing pics of grows a few years ago that were normal colour and the person had used some lens/filter that normalizes the grow room light a bit light method 7 glasses. I have hunted around the forums but get nowhere, does anyone know what you need to use to eliminate the yellow in grow room pics?

Hey Stoners, Was just wondering if you can exhaust the air from a tent through a cooltube with HPS light out into the same room the tent is in? Is it too dangerous or what precautions should be taken if it is possible?

I have just been looking into this again and i am wondering if any knows the difference between the 315w CMH with the pin lamp vs the 250w CMH that can run on a HPS ballast? i see one guy on ebay claims his 250 HPS ballast can run this CMH lamp but he doesn't have a listing for the lamp, later on a google search i found these http://www.eyelighting.com/products/hid-lamps/conversion-retrofit-systems/hps-to-cmh/ listing claiming CMH can run off hes HPS ballast http://www.ebay.com.au/itm/JB-250W-BALLAST-FOR-HPS-CMH-HYDROPONICS-GROW-LAMPS-/112029111766

If my plant starts to early stage flower. are there any risks of hurting plants by leaving 18/6 light cycle And not changing straight away to 12/12 Posted from the OZ Stoners mobile app

How much air flow will one need to push down a row of 4 x 150 ml cool tubes and take ALL air heat (around globe) away so that all Im left with is radiant heat ? Im running 4 x 600 watt down each line and have 2 rows meaning 8 x 600 watts in the room. How much radiant heat do you think would be left in the room if ALL air heat was removed down the tubes. The room is 1.8 W _4.0 L_2.4 H . Im dealing with constant 35 degree daytime temps outside, was thinking if I can make the above work I can run a small aircon to deal with the radiant heat , was also thinking if the 150ml tubes are too small a diameter to exhaust without blowing so much air down them that they whist…