Cannabis Grow Rooms

If me fan is 101L/sec how much CFM is that......also isa mixed flow inline fan same as centrafugal fan or totally different?

hey boys and gals, in a space of 1.2x1.2x2 tent im looking at a 125mm centrifugal pumping out 4.8cubic/minute.....is this sufficent??? Some italian cavo brand. id get a bigger fan but the silly tent seems 2 have a 125mm exaust vent stitched in, been told this would be enough ( 400 watt hps light ) and would this work with a 600watta??? thankyou all.

anyone bought from here? www.aussieponics.com seems really low prices, just gonna place an order myself. they are on ebay aswell. so look pretty good.

Does anyone know how I can go from lights on @ 8.30pm / off @ 8.30am to lights on @ midnight / off @ midday with minimum stress. At week 8 and about to harvy the top 16 inches or so- scrog and want the bottom half to continue for another 4 weeks and need to change light cycle as having visitors come stay for a few weeks and current cycle is not ideal thanks aussie

I have 6 54W 4ft long T5 HO Lights. My grow space is a little under 4ft wide so i cant have the lights flush with the top of the closet. should i have the lights vertically (3 on each side of the plants)? or have the lights on an angle above the plants? i attached a diagram it was fun to draw, yeah im a bit stoned....

If you were to combine three 1000W HPS light with one MH 1000W to get a better spectrum of light, where would you position the MH? based on the diagram below? Jimbo And yes... I know the shades aren't facing the correct way...

been reading the scarce info on this manipulation of light period during week 5 and 6. Has anyone tried this out or have any info or links. The overall procedure will supposedly give plants 80% more light overall and 40% better yielding potential any info appreciated aussie1

So my humidity is around 70% week 4 of flowering and i have been fighting off some powdery mildew. How can i get the humidity to go down? I bought a good inline fan and though that it would help, but it actually made the humidity go up i think. So should i lower the speed of the intake fan and try to get the temp to rise to 80? (currently 75ish). Add more circulating fans? Any tips?

I'd had my flowering 1000s in service FAR too long. Thought 18 mos, was very embarrassed to notice my texta mark on the tube base was 12/2004... I should be replacing yearly... but ya know... Was a little low on bux, bought a couple of the cheapest 1000 HPS on the shelf in Ye Olde Hydroe Shoppe. These were marked 'made in China' and had straight cylindrical glass envelopes as compared to other big HPS jugs like the GE LucaGrow 1000s which have a pronounced bulge in the middle of the tube. I whipped out my not so accurate (but good enough for comparisons) lux meter (found on special at Bunnies $20 down from $40)... ...and took a reading of the old GE 1000s at …

hey i have been thinking about growing my own buds for a while but just havent done so. anyone know where i can get CFL lamps and how much. also i know off topic but when can i start growing outdoors in melb. lots of love and i hope you reply to this because i would be very much appreciated. thank you