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I would like to see the concept, i assume its going to be a oblong rectangle ? I also assume that its going to be 400 watts total so 200 watts per 2x4 fixture ? Working out the accurate light output is a little more complex than what we have previously discussed. First theres the effeciency of...

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Just feel this would be helpful as updates from journals in progress can be far in between and wash down the pages. Consolidating them in a subforum would make a tidy place for people to look over the current grows currently taking place. Once completed it can then be migrated over to the...

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How low can you have your air cooled hood ?. I have seen people state they have their hoods as low as 3-4 inches with good airflow. Typically though 10-15" is the average with 600 watt systems.

I had a discussion with a mate who thinks he knows the correct way to trim, but i however have a different opinion but also have good reason to back it up. He however just claims thats how its suppose to be. So i thought id ask the people what they think. First picture is his trim, the other is...

Im planning to do a indoor grow this winter and i was wondering if i could use a air cooled hood to heat the room. I plan to use a 600 watt HPS with large air cooled hood. With it i will feedback the heat into the grow room. I would prefer circulating the heat rather than just using a open hood...

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Im wondering if clones can have too little light during the initial root stages. Really the question is do clones use energy from internal storage or is some energy required with photosynthesis. I have not had any success with cloning in my new system and wonder if my light is too weak. Its a...

Not sure if anyone has done a list or comparison of the strength and ppm of popular bloom fertilizers. So i thought id share one. I decided to make my own fertilizer to better match my current soil conditions so i brushed up on my chemistry math and did some study. I wanted to compare what...

I thought maybe a deficiency in manganese or calcium but im thinking perhaps a fungis. What yous reckon ?

Need someone who knows about fluid dynamics. I have a greenhouse which i have installed a airflow system. I originally was going to apply a negative pressure system but i was unable to pressurize the room because of too much leakage. So i decided to move air with haf fans in series. This is the...

Whats your fastest growth rate. I have seen a few times that a plants maximum daily growth is about 2 inches a day. But i wonder how many people indoors get close to this and how many are below par. Being outdoors, the strength of the sun can vary, affecting the growth. But on average i get 1...

Heres an easy tie down technique for plant pots. As you can see in the photos i have a wire fed through the frame of the pot so i have a tie down rail for my branches. Sometimes people just make holes in the pot but this can be messy and damaging to the pot. With this technique the frames...