400w how many plants

Walls are lined with mylar? Joined: Feb 2, Messages: 12 Likes Received: I'm planning on growing 4 plants in my room. Joined: Dec 3, Messages: Likes Received: Depends on how big you get them. Veg them for 2 weeks, and flip, keeping in mind that a lot of plants stretch during flower. Everybody has their own way and in the end it comes to what works best for you, but I have read that most of the people use plants per W, while in the other hand other people like to have more smaller plants, hence the sog and scrog method.

For example, SeeMoreBuds had about plants per W. How far should a watt HPS light be from plants? Some information I read says a watt HPS should be anywhere from inches from the top of the canopy. Other information says to get it as close as possible without burning the plants. How much heat does a watt HPS produce?

A watt bulb produces watts of heat first law of thermo. Can plants get high? Answer: A big thing to remember with marijuana plants is that they need to flower to produce THC tetrahydrocannabinol, the chemical that gets people high and other medicinal cannabinoids. You also have to watch humidity, because every time you water plants in a small space, you're going to get high humidity.

How many watts do I need for seedlings? Using a watt bulb means you can put the seedlings within 3 to 4 inches of the bulb without harming the new leaves and stems. Search titles only. Search Advanced search…. New posts. Search forums. Log in. We have an official representative from HLG that will be active on the forum to answer your questions, several units that are coming for our official product testing grow and show's, and we'll be working together to provide better information on lighting in general!

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Thread starter rockbud Start date Feb 2, You could go up to 9 under a w hps a meter squared using maxipots works great for me. Griffin Active Member. Depends on your pot size. I think you could do 6 in 3 gallon pots, although it depends on the size of your reflector.