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Clones cut straight from the mother, could some dark period - say 4/20 (not 420 time) be beneficial for root growth, rather than no dark period at all 0/24? :peace:

"Slim" would that be Slim Shady?

Solar tube to let light in - only problem would be when flowering during summer periods etc

https://www.rollitup.org/grow-room-design-setup/789395-what-do-you-think-my.html

My tent survives with straight ducting on either end of the tube, slightly tilt so the heat travels up one end. Have a carbon filter attached to a fan..........and that is it. I do have a fan inline with the tube also, but this rarely turns on by thermostat at canopy height.

Found another use for the flood trays........... Sand box for the Rega TT - Avatar is pic of the lower device in the background - Perreaux 250i amp, simply put, it is the 1 of the best marijuana smoke on steroids for an amp ! Google the theory of a sand box if ya into hi-fi. I find a good...

I have placed thick solid cables ties around all the corners to reinforce....works well

4 ounces from that - You should market your methodology and sell it.

Maybe they should make where you make electrical connections not from plastic then? Hell - all mcb's, rcd's and rcbo's are plastic housed - I am doomed.

You can see the 5mm air gap between the ballast and ply..........I am more worried about the mattress beside, and the roofing paper above....... Everything you see is temporary until I lock the final system in place - then tidy up. Generally when I am not around, the system is shut off. R.C.D...

It's never enough !

My new method works good I think: Placing only a 1/4 the amount of rockwool in than above. I was packing it in too tightly / much. So the pot on the right has rockwool in the bottom, the one on the left is full of perlite. I then place the full pot of perlite into the rockwool pot...

humidity would also soak into the rockwool ? HOw often to you water? At a guess, that rockwool looks wet - not damp

Not many people use digital temp probes?

In the trade, it is called a 'sigmoidoscopy'

Placing my temp probe the recommended 6" from a 400w HPS in cooltube with a 550m3/ph centrifugal fan pulling @ 260v (variac overdrive :) on a 240v circuit NZ ) and passive air intake temp around 18 degres 'c' - I cannot get the temp to 26 degres 'c' at canopy height. When I lower the canopy...

vent the attic for a minimum (during summer) - i.e - spinning cowl or exhaust, every drop in temp here, will prevent you chasing solutions to temp related problems.

This is the bit that concerns me - "tightly packed" - in the photo I posted with the build up, that is tightly packed and I think it does not work......I changed my method to ripping RW and placing in the bottom and it seems to work much better......?

Good to hear it works fine. I was starting to think 'al b fuct this wont work' Do you add fresh nutes into half used reservoir? Would this not upset the balance of N.P.K ? Do you use H202 to combat algae, if not, do you use any other product?

I am sure he has never used perlite. He went from Rockwool or flock pots to using Fytocell with flock in bottom as you described above. I will be using Canna flores. Ph will be 5.8ish It was a surprise to me that it seemed to be a bad idea - which concerned me! I have done some more...