this is my first grow
2x2 grow tent with mars hydro600 LED, what height should i have my light away from the plants. im germinating now, I cant find an exact number, just a range, so I'm assuming about 20 in. from top of plants.
also i purchased a 2x4 tent since the 2x2 is REALLY small, I plan on planting 4 plants so I guess ill do one in the 2x2 and 3 in the 2x4 with mars hydro TSL2000 300watt.
also my humidity is around 35 but I don't have anything in the tent right now so i'm assuming when I put plants in there and start watering the humidity will go up in the tent?
I'm running 4 different strains, white widow, power plant, jack herer and gelato. wish me luck.
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Honestly the best person to ask about light distance when using LED grow lights is the manufacturer. Looking at the data they provide on their website, 18-20" for seedlings/clones/mother plants should be fine.
Your plan for one plant in the 2x2 and three in the 2x4 is good IMO. That's what I personally like to run.
The plant will still grow in an environment with 35% RH - it's just not ideal. Yes, when the plant is watered, you'll notice an increase in the humidity. However, the grow light generates heat so you will most likely need to exhaust some of that hot air out which will also pull out humidity. Balancing the temp and humidity is something that you will get better at over time with experience.