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There IS a way of keeping a fan running all the time, either at a low speed when the room is below the temperature setpoint of a thermostat and at full speed when above the setpoint: Simply parallel a motor speed controller with a thermostat. Set the MSC to a fairly low speed, enough...

Yes. I'm in a somewhat cool location and thus have my ballasts in the flowering room to keep the air temps up to 24-26C. There's also a dehumidifier in the flowering room that runs 24/7, which also puts some heat into the airmass. Consequently, the room needs thermostatic control of the...

Probably true. The nut is that for all the things I've written on the topic, there's usually more that I've omitted because it was irrelevant to put in a reply on a given query. Thanks- indeed, all's well. :) If you feel compelled to do so, fine, but this kinda throws a wrench in the...

Sorry, what's the crappy part?

Heat mats which do not have an adjustable thermostat normally still have a thermostat but it is fixed at a particular temperature, usually 30C. Confirm the surface temperature of the mat by putting an indoor/outdoor thermostat's outdoor temp sensor in contact with the mat surface (a bit of...

I don't begrudge anyone making a profit, but any shopkeeper who wants loyal clientele will charge reasonable prices instead of the limit of what the traffic will bear. I have Avengers. I believe the difference is the Avengers have a highly polished reflector surface finish. The jugs...

It really is outright fraud. No LED or array of them comes close to the light intensity produced by HPS, but several makers/sellers of the things claim they'll outperform a 400HPS. Ain't happening.

*sigh* Another victim of the great LED grow light fraud: * Switching lights mid-grow HPS to LED Don't waste your cash, folks.

Sorry mate, I do what I can. When I comment broadly on the worthlessness (and yes- they're worthless) of LED grow lights, I usually get some w33d b4R0n telling me I don't know what the fuck I'm talking about. I don't have the time nor energy to waste on such stoushes. Those who have sunk...

I've been through Canna's 'Canna Aqua' info file and I do not find any recommendation against forced aeration, only a note indicating that aeration may raise nute soln pH. If you're using a high-moisture retention medium like rockwool or to some degree, Fytocell, in a flood & drain system...

Unfortunately, there's no LED that can make the intensity levels of HPS. I've been debunking LED grow lights for yonks. They just don't do what the sellers claim. The technology may get there someday but it's not there yet.

Use a pair of digital timers.

Oh, and by the way- when using insecticides, don't use LESS than the recommended application amount, either! Insects can develop a resistance to insecticides if dosed in sub-lethal amounts. It's important to kill 'em all in one go!

There's only one capacitor in a 'magnetic' ballast, usually 26 μF, 525V for a 1000W HPS. Not electrolytic; it's an oil-filled, non-polarised type. Yep! Nope! I'm well aware that many growers seem to think they need to add a number of magic sauces to grow dope, but the vast majority...

Thanks for that, but in the age of filesharing, I'd sell 1 copy... and then everybody & his dog would have a copy before sunset. There's also complications with getting paid for the work without revealing my identity. Not such a big deal in the US but here in Aus, selling a book describing how...

Thanks for your thoughts, panster! I'll definitely concede the point that as goes the clone so goes the harvest. If you muck it up at the beginning, you can't expect top performance at the other end of the chain. However, if you've gotten the clone watering right (the most fiddly part of...

Would be nice to take lux meter readings with all new gear so you have a reference point. Yes, got ordinary magnetic ballasts. When they're working correctly, they're just fine.... and they DO last nearly forever. Supplier didn't sell any 1000W HPS electronic ballasts anyway, only up to 600.

It's about as high a density as I'd ever attempt. It'll work, though. There is no such thing, but rotsaruck. If anyone has questions or comments specifically for me, please direct them to me in this thread. Don't want to flood out OP's thread & I'm more likely to see your comments.

Eeek, 50 off 1 plant? I see. I maintain 10 mums to provide 30 cuttings every 2 weeks. I may take 5-7 from about 6 mums while 4 are younger plants being grown up to sufficient size to donate slips. Could be any number of things- has your flood system been producing well with other strains?

Noice. Clone stems are a bit thin, tho. What sort of light are you running your mums under? I use a 400HPS over my mums. I think you'll get moar yield if you start with moar staunch clonage. My clone stem thicknesses are between 5-10mm.