First time doing this and I am on day 2 of seedling but I am not sure of the lights, I have them on the low setting of 25% but should they be higher. Working with the Vivosun 1000. Also having trouble with humidity as unable to keep it at 70, currently it is at 98% and I have a dehumidifier. Any suggestions would be great.
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With seedlings, they do like humidity to be higher since that’s how they absorb water until the roots develop more. Are you doming them? If so, I have my lights around 25% as well at about 18". I do use Photone to measure light intensity but I’m not obsessed with it. here is a chart I follow. Download the Photone app on your phone and set lights.
Do you have it in the shower with you? Usually the problem is low RH. It is OK while a seedling and early veg but not later. Is it a seasonal temporary problem? The higher the RH then generally the temp needs to be higher
Sounds like you need to increase air exchange. Open the tent’s bottom vents or open the door and get some air moving. I have a 3x3 with a lot of lights. I use a intake fan and filter to increase air intake. I will often open the tent while lights are on.
Oh try also when lights out tent closed leave exhaust on lowest and crank the intake fan. This helps me maintain a better rh in my room also. I turn up exhaust it gets cooler in there and also raises the rh quite a bit.