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So there even are arduino projects for growroom controllers with CO2, temperature, humidity, etc.... That one sounds interesting: http://yieldbuddy.com/ Also there was a guy called @Casabonita420 in rollitup https://www.rollitup.org/t/growos-diy-arduino-co2-temp-hum-automation.911404/ Pretty...

hi razorbac, I did write you a PM about the arduino!

Hi Casabonita. I did write you a personal message about the arduino controller!

But this valve isn't a bell syphon or is it?

Yeah... PLC and Arduino sounds interesting. Unfortunately I am still in a hurry and can't investigate myself. But do you know of anybody who uses PLC or Arduino for growing or is there a community for that? Acutally I already did some stuff with Arduino in university... About the Schneider...

you mean don't go thicker or thinner? and why?

Actually I have somebody at my hand who would does me all kind of electrical wiring for free. But I wanted to inform myself independently before, so I know all good solutions available and what would be best. Also I am pretty versatil in computer programming. What is a programmable board? Sorry...

I got a message from a shop and they said, that in these valves for 50 bucks is a Venturi valve which uses the Venturi effect. Googled Venturi effect and now I still don't understand, how these valves are built. :-D

Ok thank you very much for the information about the voltage drop. About the time switches. The problem is that I want to be able to use some devices synchronized. Like if I start the pump, then open this solenoid1 for 5 minutes. Half hour later start pump again and open solenoid2 for 5...

yes the reflector sends the light pretty wide... that is what i didn't like. I have four 4x4 tables in a row. So almost like you. I will put a 600 to 750 Watt lamp over each table. So four lamps. I will use CO2 too. My ceiling will be good for the adjustaWings and would be good for 750WGavitas...

@SchmoeJoe Ok. That is awesome. I will run the ballasts directly at the lamps without a cord. Why isn't voltage drop an issue on the whole circuit? Because digital ballasts adjust? I have not much clue about electricity :-D @Cold$moke I will use adjust a wings 600 to 750 Watts. I was thinking...

I have to switch my reservoir now, because the first one got delivered broken. I will go for a big rain barrel. Now I have the problem that my water level in the rain barell will be higher than my tables. What is an advisable plumbing configuration to drain the tables back into the reservoir? I...

So you wanted to say.... the intake being the lowest point and the drain the height of the water level? Normally in flood and drain the intake is the drain and you have an additional overflow. But because I need to drain first in another reservoir, the nutrients can't run the same intake line...

Thank you very much! What does a voltage drop of 3.8 % mean for the perfomance of my lamps? What do you mean when you say, that you would up to 2.5 purely because of the load? I will run on one circuit two lights, which equals 1500 Watts. Technically the circuit would be able to do more than...

sorry, I am not sure what you mean by "you put the intake line several inches above the drain line in elevation :o lol the drain being the lowest point and the intake the height of the water lvl." Can you explain? If I use water sensors and water emergency stops, there is no possibility that...

Ok. It is not about the length of the OEM cable. I think if the ballast works properly with the OEM cable, depends on the length of the cable of the whole circuit. So it seems that my 16 AWG has something around a 3% of voltage drop. But you mean I don't need to put a new 14 AWG circuit in...

What do you mean,when saying when using digital ballasts you could use any single OEM cord and be fine? Can you please explain your reasoning? For calculation I googled quickly and I did use this here: http://www.paigewire.com/pumpWireCalc.aspx?AspxAutoDetectCookieSupport=1 For 240 Volts (not...

so first... @jemstone who is this noah? was it a biblical joke only? :-D The reasoning why I don't do pots and a low reservoir. I do sea of green with something between 150 to 200 plants in rockwool. I can't switch from tables to pots. Also I want to use only one big reservoir, not several. The...

Hi, I want to know If with my setup my lamps will run at full power or if my electrical installation will be inefficent. Ok my setup: I have four 750W Double ended lamp fixtures. My plan was to put two lamps at one circuit. That would mean two circuits for all four lamps. I have 16 amp...

If I do that I would need to build some kind of high frame construction where I could place my tables on. Also my plants would be to high and I would get problems with the ceilings. There is for sure a way to do it properly with a big reservoir. I don't believe that all commercial grows with...