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Read threads posted by Professor Marijuana....it is all about environmental control and lighting. Master that, and you will be a master grower.

1st of all, you get what you pay for. Hanna instruments are cheap. Pick up a Ti-Meter and calibration solution and calibrate it @ every res change....it will make life much easier and will pay for itself in the headaches endured in PH and PPM issues.

Hey Professor, haven't been on here in a while.....can't find a thread on this but what Ph do you see the best results with during bloom? Maybe its my strain...I usually keep it between 5.6-5.8 @ 65F, but was curious on your thoughts.

Hey fellow professor, been busy with work and whatnot...have time for thoughts on water and conversation? Sorry if I missed a few posts!

I built one in the past to compensate for summer heat and a weak a/c. I was impressed by the results as it lowered my temps in a tent by 10 degrees and sometimes more.

If you have a good fan....the bulbs can be an inch away from the Plexiglas. The melting point temp is much higher than the bulbs. I have used simple silicone for the creases and duct connectors from wood working equipment that's only 3". I can place my hand on the Plexiglas for a while and it...

Each ballast in the Barboy controls a certain number of bulbs. If you are having problems with the bulbs, check to see if the wires are tightly tangled. Also, the end connectors have to be alligned in a certain way. Also, the pins on the bulbs cannot have any oxidation, as will affect the...

God damn spell check....lumens not linens!

By the way, pretty plants and good color spectrum...be curious to see what they would do with more full spectrum linens maybe as a supplement? Cannabis is high light level plant. Best strains from Mexico and Afghanistan where sunlight is very intense. Just my two cents but VERY nice plants.

You can reinforce the light fixture using simple components. Also, with a few pieces of Plexiglas and duct connectors, you can run a cool tube type fixture where the light can touch the plant for days without burning....delivering more light distribution than a 1000 Watt HPS. Just simple...

Very true....to each his own in growing. So many ways...no real right answer or best method.

I don't mean to argue with you, but lumens are perceived by the plant as well, why do you think so many people are so reluctant to growing with HPS??? It works because cannabis is a high light level plant. What the HPS growers dont' realize is that it is at the wrong spectrum and their plants...

I have been reading this thread for quite some time, and I always see everyone talking about these very short misting times resulting in huge root growth. I only have 50 micron misting heads, a 100 psi diaphragm pump, and a timer that goes 1 min on, 4 min off. I have been running HP aeroponics...

Hey prOfesseur, new member to the rollitup community...am very pleased to see a thread on these bulbs. You are 100% correct in your ideas, trials, and thoughts on coral bulbs on plant growth. But just like the sun, the range of color isn't the only important thing. Remember, it IS about...

Thanks..will look into that. The H202 seemed to help. I've heard letting the roots dry out to an extent helps. I've heard of LOW levels of chlorine in the root zone to kill off molds and rot....so it is possible. Thanks for the advice. I was also thinking of direct UV light.....have a...

Have a question for anyone who could answer...any good way of getting rid of gnats in the root ball and pod? I flushed and sprayed with aggressive H202, and now running straight Hygrozyme and Beneficial Bacteria to clean up the mess. Will run for next 12 hours....using R/O water (with ultra...