light height

Hi All, In a 4x4, I am using a MarsHydro TS1000 in between 2 Viparspectra450s only running white light for seedlings... Any advice on time/height/power for seedlings? Currently running all 3 lights @ height: 22inches, power: 30% time: 18/6, medium: coco Thanks in advance for any commentary!

Ok,I'm running a 1200 watt king led, and two sunblaster 25watt cfls,i need some suggestions on light height from the tops of my plants. No lux meter yet. Ordering now! Is it true that I should run the led light in both veg and flower mode while on the 18/6 light cycle. They seem pretty...

Below is what I've cobbled together. My two rigs. Flower: (4) 3000 K Cree CXB3590, HLG-320H-C2100B 2' x 4' space 40 w/sqft Veg: (1) 3500 and (1) 4000 K CXB3590 MEAN WELL HLG-240H-C2100B 2' x 3' space 25 w/sqft Both drivers are dimmable and all the COB's are top bin and equally spaced in...

What height should I put my 300w led above my seedling? I just put it in the soil 24hrs ago with the light at 24". Nothing yet. Is it to close?

I have a AgroMax 39x39x79 tent. Will have a 400w mh for veg, switch over to hps for flowering. I also have an 6 inch growbright high velocity inline duct fan. I will be putting 6 3gl pots, not sure if more or less would be better. they will be clones and not starting from seed. When i choose the...

This may seem a basic question: A single COB has a viewing angle of 115°, which means it emits a cone of light from the surface downward, and depending on the distance from the source, produces a "circle" of light of a certain size at maximum brightness which decreases in brightness outward. Is...

Hey guys Me and my roommate decided to try our hands at growing. It's a budget grow, we have sectioned off a corner of the shed and put thick cardboard as walls and currently have tinfoil bit will be upgrading. We are using a 250w CFL (2700k) and two 100w CFL (6500k). We are having trouble...

hi, just got my 250 watt hps and was just wondering how far to put it off my seedlings (week old)