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a check valve can keep things from going backwards... and since you will be blowing pressure out you should attach to the sewer pipe near it's exit from the house and past the check valve... you wouldn't want the air pressure blowing the trapped water out of all your P traps I'm just guessing...

ceiling will be normal height 8 feet I don't necessarily HAVE to filter... I'm just saying I can put that elsewhere... or a CO2 tank.. or my reservior... anything like that I will have space for outside the closet. it's mostly the light coverage... No point to say what strain I'm growing...

If you want to run 240 on the sub you'll need to pull a 4 wire cable... or a seperate ground since you have to break off the 120 you'll need a neutral and still need two hots for the 240... plus a ground to be safe

If you were going to build a room based off a 400watt HPS with the possibility of taking it up to 600 or 1000 watt HPS later on what size room would you build? Well to be clear, this will be a "closet" inside a room... both being built from scratch. And I won't have to stuff any extra crap in...

good info... but not really what i was asking is the spent nute solution too "toxic" to use on an outdoor garden I would think nature would have a way of dealing with these specific toxins

ok... well that explains that part but what about using the waste water elsewhere... like as a supplement for soil... especially in the garden or outdoor grows i would assume the biologicals in the soil already have a way to deal with this toxic waste that gets produced as part of the natural...

First off I'm basing this on some assumptions to start with so it may be stupid but I have no hands on exp with any hydro so here goes... I know people change out their water (every week?) but do you actually dump it all and refill the res and re mix? (plus cleaning, etc) or just add more of...

freshly used TP... SIKE!!! wish I had a secret worth keeping

use a no wilt spray BEFORE you take the clones.. a couple days before. then cut as usual and store in the fridge like they said... the waxy layer from the wilt spray will keep it from losing as much moisture and help protect it from the constant contact from the side of the bag I'm basing this...

i like this... will give it a shot

you'll always lose a bit in the conversion... and since you're constantly converting and losing light to the plants and losing light energy to distance traveled you won't actually create a sustaining cycle... but you can capture lost light and store/use that energy... or you could spend less...

clones will root under 12/12... but that doesn't mean this is going to work out that well typically they do better under 18/6 - 24/0 and i wouldn't hope for a 100% success rate on the clones

i "tuck" them out of the way but I never thought to go to this extent... i like it

and you probably wont electrocute yourself or burn your house down

i've seen some growing in a dumpster... but i don't think that's what you're looking for "mind if i do a j?"

if your girls are pulling the green out of the shade leaves at the end you're probably alright to do nothing

plant will waste energy healing and developing these new side colas when it should be focusing on buds

it is not ideal but will not kill your plants by any means

First off, I didn't do it, I just found it, and thought some do-it-yourselfers could benefit. I'm thinking about benefiting myself. http://earthtainer.tomatofest.com/

my point is that the lights are long and the reflectors rectangular... so the light is cast off more elongated than a true square... yes i'm talking about HPS still.. that's kinda what this thread was about i thought check it with a light meter