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Hi everyone. Could someone tell me if I can run 4 x cxb 3590 with HLG-240H-C1400A and will I be able to dimm the light? (700 - 1400ma), no outside dimmer needed?

Thank You for response :) My grow room size is about 1.7x1.8x1.8 meters. I will do sealed room. I will start with yiest/sugar/water mix at start, COBs. So, I guess I won`t need an AC or venting, because COBs wont build such heat. If my skills grow, I will buy Atlas 3 co2 controller and a tank.

Is there any possibility to see light parameters on CREE lower than 1400ma? That simulator won`t show lower than that..

Do you feel any higher electric bill from that valve, that opens a gas tank? If I do not need more or less than 1500ppm, why would I buy atlas 3? When You will exchange your co2 tank, could you check the size of thread on tank? We have a standart here 21.82mm I guess..

I wonder, how much power that electromagnetic valve takes (that opens gas near tank). So, atlas 2 has only one setting at 1500ppm?

I found on amazon this " CO2Meter RAD-0501 Day Night CO2 Monitor and Controller for Greenhouses". I cannot post link, because I am a new member here. Check this controller out, looks good?

What about calibrating those things? Just looked at atlas 2 co2 controller. Its written on it 120V 15amps. wtf is this?

Oh, snap, I forgot to add size of my room, it is around 1.7x1.7x1.7 meters Oh, snap, I forgot to add size of my room, it is around 1.7x1.7x1.7 meters

Hello. I am going to "do" a sealed grow room setup. I have found that I can buy a 10L CO2 tank, here, where I live. It has 21.82mm metric type thread. I would like to buy a system, so I can adjust CO2 ppm as much as I want. Aprox. how long would 10L (7kg) CO2 last running 1500ppm? I could turn...

So, how are you cooling your room? I guess I will try to make a small ventilation system. For example - 100-150m3/h in and out, through coal filter, that will restrict heat loss when vents are off. And 3-5 minutes per hour of vent work.

Nop, do not have these.

Rings? Could You show me the picture?

You mean, just put them in water and clean them? It says to clean them with paper towel..

If I did not clean them once, does it affect? Ussualy paper towel?

Are these good? This thing shows me ph 7, after 2 times adding acidic water (I added citric acis to water, ph around 5-6), this thing still tells me its 7. And fertility is too little for a "good" soil I bought in local shop and added nutrients.. What is the best way to get ph down - soil grow...

Are these good? This thing shows me ph 7, after 2 times adding acidic water (I added citric acis to water, ph around 5-6), this thing still tells me its 7. And fertility is too little for a "good" soil I bought in local shop and added nutrients.. What is the best way to get ph down - soil grow...

Are these good? This thing shows me ph 7, after 2 times adding acidic water (I added citric acis to water, ph around 5-6), this thing still tells me its 7. And fertility is too little for a "good" soil I bought in local shop and added nutrients.. What is the best way to get ph down - soil grow...

I tried to "unlock" some package codes, stil did not understand, which ones are they. Here is a picture. (open picture below post) I see 35G, ok, from datasheet I know that those are 3500K. Next, what is DB? It is probably 13`000 lumen bin, right? They told me, that they have CD bin. Next...

Was checking Cree product characteriztics page for a while.. is there any chance seeing data on lower currents than 1.4a?