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If you want a grow that's going to do something more than disappoint you, you have some changes to make. Throw away the 438W of CFLs and buy a 400HPS. Install ventilation that will shift the volume of the room in 1 min, e.g. 200cu ft room gets a 200CFM blower, air is removed from the room...

did you read my post?

No glass shop or picture framers around? Cutting glass is a piece o' piss, BTW. Glass cutters are cheap as chips, just scribe a line with the cut wheel (in one direction, one pass only), put the scribed line over the edge of a table or workbench and it will snap cleanly. Clean up any rough...

Glass should be available in a couple of thicknesses at Ye Olde Giante Hardwarre Shoppe. Your local glass shop may have some good suggestions for you. Glass used for picture framing is usually pretty thin and colour neutral.

Dear pussy, SIGN your negative statements or fuck off. edit- the pussy is Greymattertripp. FYI- rep comments to me are no longer anonymous. admin has switched on the elite features for me.

well, you're a glutton for punishment. :lol: Good call. Air has mass and a column of it from basement to attic may benefit from another blower inline, the attic's a good place. Use a centrif blower on the exhaust down in the basement. If it's a good quality centrif, you might get away with only...

Soil grows generally are a bit slower and need a week or two more flowering time to meet the output of a good hydro op. A good yield for a hydro op is 1g/W in 8 wks. HPS light output does degrade appreciably after 12-18 mos but I would not expect a 40% cut in your output from the last crop...

Plexi would keep more heat in, but you're right, at the cost of light transmission. Can't have that. Glass should be available in a couple of thicknesses at Ye Olde Giante Hardwarre Shoppe. Your local glass shop may have some good suggestions for you. Glass used for picture framing is usually...

To be deadly honest, they look exactly like I would expect. The low intensity of fluoro lighting produces a characteristically low density bud. It's the foliar penetration power of high intensity light which makes the solid nugs. When you see the result of a big HPS compared to what you're...

You're quite right that perspex/plexiglas does not pass as much light as glass. Definitely use glass- and the thinner, the better.

In ops without aircon, you're very much at the mercy of ambient RH. The only way to lower ambient RH without aircon or a dehumidifier is to raise the temp of the ambient air you're drawing into the op. This may not be an option if the air you are drawing in is already at or above the target...

We covered that on page 1 of the thread. https://www.rollitup.org/hydroponics-aeroponics/116636-humidity.html#post1417969 However, LGP does know that he has shot the pH too low; this locks out P and is also a cause of purpling, more likely in this circumstance, IMO.

Really? OK! :D Either that or the much fabled room temperature snow. ;) Beats me what's floating on that tank, esp w/o seeing it.

GH sales lit says FloraNova is part organic. We just don't know which part! You thus should not use H2O2 with FloraNova. Looks very bonsai-ish. Greasy little bastards aren't they? HPS is a very good degreaser. ;)

'Wet feet' is a gardener's term for overwatering. Overwatering is defined as giving so much water that all air is displaced from the medium or drainage so poor that water in excess of the needs of the plant remains in the rootzone for so long that it loses its dissolved O2. Of course the RW has...

of what? Considering I was born in and lived in the US for the first 30-odd years of my life, I got used to the idea of American retardation some decades ago. If you want my opinion, I'll need pix, otherwise I'm just guessing. Could be lots of things, but pathogen activity (i.e. pythium...

I'm quite sure this may reflect isolated cases, but the documentation I have seen does not support the general supposition that prescription opiate users move to being IDUs of heroin. IDUs tend to have started off being IDUs. My information on benzos comes from the doc treating me with them some...

yeah, I've even heard of one freaking fracker who dragged the entire US into a war cos his god told him to. Can't remember his name, offhand. Sounded something like 'pubic hair,' I think, just can't recall. :?

I was hoping at least that they didn't send it out in pkging which clearly identified the contents as a horticultural light. There's some pot-hatin' cocks out there who do work for postal/courier servs. My hydro shop had a small problem with a postal dickhead who smashed stuff that was...

Just Sweet Tooth #4. The hash is plain ol finger hash, rolled off my fingertips when manicuring. Nice little treat for the manicurist. ;)