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if that's a pair of heatsinks you could probably actively cool 2-300w of cob's but those fans look like older electronic equipt type fans, they may run on some fairly random voltages, if you have sets of 3 @ 12v dc you can power them in series off any 36-42vdc led power supply, yer still gonna...

Sorry but I do not believe in man made climate change and as far as CO, wot is that big tank of gas big growers pump in their grows? More CO2 = better (I might also point out it was estimated that mt st helens released more CO that all of mankind's activities since the industrial revolution)...

As us old bikers always say 'don't oggle wot you ain't ever gonna own, run wot you brung and ride it like you nicked it' my first rig consisted of a 12v car trickle charger on a 100/110w car headlight bulb and a regular 150w incandescent! Grew me some damn shitty weed but you take yer savings on...

Simple answer would be as low as the plants will tolerate, if the tops bleach a little lift em up higher and the bleaching should recover. 4 inches to 3 feet in practice. Led's have near zero Infra red so they don't burn the plants they just bombard the chloroplasts till they turn white from...

I have a 12w cob fer my clones/freshly potted cuts and a 60w cob for final vegging before movin em into the main space and NO! just say no to blurples! esp ones that are called 600 but only draw 300w, its misleading to the point of fraudulent imo. Better to buy the best you can afford and build...

Perfect, you can use all your growing schwag to feed the critters, happiest worms you ever did see are ones livin on weed scraps. Worth noting there are different species of worm with diff habits and preferences, red wrigglers or tiger worms are your best bet, the large garden earth worms are...

That light unit is 285w (real world draw) so should give a reasonable delivery of light, as to other lites, you will need at least some type of veg light to bring on yer cuts/seeds without tying up yer main grow space for weeks every cycle. Worth mentioning filters are only absolutely neccesary...

No and bloody good point, any biocidal should be kept out of a bioenergetic system as many are persistent and accumulative, I sterilise NOTHING, I keep my cloner clean by wiping between uses everything else gets left well alone, in this case cleanliness is NOT next to godliness!!

Wot she sed! :weed:

With organic soils wetting or lack of it can cause a lot of the problems, both alluvial clays and composts become hydrophobic (water repentant) once they pass a certain level of desiccation (drying out) What this means is despite your soil looking wet and feeling heavy the water is being...

To replace 1000w hps will need aprox 500w of CoB's, less if they are higher efficiency. CoB's liberate so much light from such a small area you really need multiple cob's to distribute the light, how much distribution you need depends on your ceiling height and planned crop height. If you have...

You make a good point there, one I should probably have pointed out too, but on this occasion I'd say that was a borderline call, if the soil is so hot/compacted its actually killin the girls they are dead if you don't so better to risk potential failure than do nowt and assure failure. If its...

No quick easy answer to that question but 'organic growing' is NOT the answer. Organic simply means agro-chemical using biologically derived chemicals, it is so far from 'natural' it hurts. Does a woodland need kelp, manure, volcanic rockdust or magnesium salts? Nature uses a number of cycles...

for the repotting now, just a peppering of yer myco's direct on the roots, but use the straight compost, those girls need a bit of neutral medium to recover, then perhaps your mix as is at about an inch deep bottom of the pot, a little 1-3 mix of it with the 3 being compost and the 1 being your...

I lived the middle third of my life living as an itinerant agricultural labourer, in that time I worked in many different farming environments from pullin spuds up with me bare hands to working as sole forester to 60 acres of ancient english woodlands. In this diverse decade and a half I lived...

is all too hot, still being digested by very acidic microbes, best avoided imho. Get some regular assed compost in.

garden centre compost cheap as chips will entirely suffice, peat compost is still very hot.

Or Dr Elaine Ingham my favourite soilologist...

Don't take my word on my method, check the evidence!!! Lawton is a feckin hero! :bigjoint:

There is always hope, as an orchardman we would routinely rip mature apple trees out the ground with a fork truck and stick em in another site, by the following year they looked as if they had always been there. It looks like yer soil is way too hot and wtf is all those white clumps? wotever...