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I got a cheap chinese TDS meter and so far so good. I don't take care of it, don't rinse it with water and it's on point. But I do plan on upgrading one day.

Since you believe it to be an enviromental problem, how about just continuously running a sterelizing agent to keep the water dead? That way root rot will never have a chance to infect. There are few cures I can think of: -Pythoff, -Pool Shock aka calcium hypochlorite (that's what you've been...

Flat white will keep the heat down more than mylar, although the latter is more efficient. I'm not positive on this one, but I think mylar is light proof, so just line up the walls of the tower with some mylar. Lovely choice for the PC case, nice and tall perfect for micro grows. As for light...

Lovely plants there OP! Question about the Master Kush, that's 30 days from seed at 12/12 yes?

I did a PC grow for my first indoor op... ahh the memories. I think you're all set with the lights, for veg you could add one warm bulb because cannabis likes a mix of spectrum (you'll save some money too). Also, you could try to find some magnets to stick to the bulb fixtures. That way you can...

Although... shit, I let the water level drop more than I wanted to and it;s been five days since I last used chloramine... I re dosed it today but could there be bacteria in my reservoir that's causing pH drops?

I've just experienced the same thing just today, I've just hit the 5 week mark.. I checked the pH and it as 5.3 and I haven't touched the reservoir in days. I thought it was root rot at the beggining, because RR is known to cause pH drops, but this thread chilled me out. :D I'll just monitor...

Looking lovely guys. :D Some solid bud production there, I'll post a few pictures in a jiffy.

I've never tried Ebb and Flow in my life, but I'm planning on trying real soon so I'll stick around. :D

Mount the aditional fan on the opposite side. Also if a fan is pressed against a wall, it will be having a hard time pushing the air, something to consider. You could make some light traps out of small PVC pipes if stealth is an issue. Also, have you thought about doing a scrog in addition to...

Turn those cfls hortizontally, that will lower the temperature slightly and give you more light bulbs in general produce more light from the sides) and you get more space! Try this mate, buy some super strong magnets and stick them to the back wall at for example, three different heights and...

Some solid advice here OP.

Mate, what the others said, you should not trim anything off the plant when it's so young! And am I seeing pistils there? How long do you keep your lights on? Is this an autoflower? If so, for how long have to been growing it?

I bought a cheap 75 GPD unit, and it filters my 250ppm water to 4-8ppms (at the beggining I was shocked by the pureness of it, I thought I was going to end up with 30ppms). The only drawback is that it takes 2h to fill up 18l (which is what I use in about a weeks time, 11l for the start and then...

I like the suggestion with the absorbing foam. That could be a good idea. You could suspend the pump via a bungee cord (minimizes vibration).

Air pumps should be on all day, every day unfortunately.

ol' school.

What the actual fuck, well that's one way of staying on point in prison.

Nice PC grows guys. I remember doing one for my first grow, ahh good times. And this was 5g, LOL. But I had a ton of fun and I still use the case for cloning/starting seedlings.