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I can't be the only one who watches heroes. I don't see anyone else posting a thread for it, so here it is. so how was the first episode? it was pretty good. I wish I could remember more of it, but I know it was better then last season. what do you think is with niki? alive and with new powers...

timers that you can buy in stores like walmart are always powered by 120 volt ac. this would be a problem trying to add timers to a 12 volt system. inverters can be used, but that would cause a constant drain on the batteries and aren't very efficient. I'm sure there are other options to be...

I'd go with a lookout if I went back to that place. someone finds you there, you could get shot. but I would like to shake the hand of a pro grower like that. so where are the pics?? :D

if efficiency is what your goal is, try a case study on solar for pumps and fans only, and use the sun directly for light. low voltage timers is the only thing. where would you find what you need? grab an old pentium 133mhz lap top, connect everything to that! just a thought.

this sounds like the best plan. solar is great when it works, but would cost an arm and a leg to install enough to power your lights. you should check with a knowledgeable electrician first on the wire size. they don't need to know what it is for, say a hunting cabin or something.. the cable...

I haven't heard much about ebay, but I have heard enough to keep me away from it for anything to specific like mylar or hid's. I have heard paypal is what you need to be careful with, but ebay and paypal are the same company anyway. they say if water is clean enough to drink then it's clean...

so what exactly are you looking for? what do you have in mind? I do some stupid things when stoned, but I've done worse things sober. one time I was gonna go outside and walk across the street to grab something from a garage. I stop half way there at my car and get something else, then turn...

2x3's are ok to use, but 2x4's are a little stronger if it's needed. frames can be a little wobley at first, but that can be normal, and it gets much much stronger once there is plywood mounted on it. you can use bathroom calk to seal any cracks and make it air tight. I'd just use normal cheap...

are you sealing off the gap between the fan and the hose? can you post any pictures for us to get a better idea of what you have? usually, you'd have an exhaust fan blowing or pulling air out from the top of the room. heat rises, so this is where it will be warmest. if you pull air out rather...

you can keep the pictures, send us some yummy bud.

normal party type black lights are uva, between 350 and 400nm. not sure how helpful it is to the plants

nice idea, even put a small computer fan blowing across the top side of the plexiglass. but I'm pretty sure plexiglass does block more lumens then you'd want to loose. glass would work better, but more dangerous and harder to handle. your best bet is nice and simple. raise the lights another...

while I agree that more red light could only help the plant, adding red walls to a room wouldn't really add more red light, but only seem that way. the walls would reflect red light and absorb all the rest, while walls painted flat white will reflect the same red light with the addition of all...

sweet, have you made it a month now? congrads

homer simpson.. red walls would be bad. when light hits a colored surface, every color of light is absorbed "except" the color of the surface, which is reflected. red walls would only reflect red light, all other colors would be absorbed. this is a bad thing because we want more light to reflect...

the $5 ones on ebay, I got one to try. the moisture part of it works ok, but ph testing doesn't do a thing on the meter. doesn't work. even if it did work, it doesn't seem very reliable or accurate, so not even worth that $5. I was hoping something like that tester would work well enough. I've...

the parallel port method works great and is simple. I've used it in the past, but I'm using a serial interface card for this project. I have 4 adc ports per card. I have 1 card in use at the moment and is running my grow room. the prototype I'm finishing up now has 2 cards in a box, so I'll have...

I guess my biggest question is still, can I make a quick and simple ph probe, or is it something that MUST be perfect and of good quality?

I'd go for a carbon filter. you can put a small fan in the green house blowing into the carbon filter and exhaust it to the outside. this will create a small vacuum in the greenhouse and feel any smells from escaping. best way to do it in my opinion. I wouldn't take the risk

here's an idea I'm trying with my next seeds. the first day I soak them in a cup of plain tap water. the next day, I take 1 or 2 damp paper towels, fold them to fit, and lay them around the inside of a clear plastic cup (around the sides only, not the bottom). then carefully push back parts of...