T5 400 Watt 4x4 Grow - Help

[Seaweed Farms]

Also if you're going with coco, I would look into coco nutrient lines. Gen Hydro has cocotek and it's like 20 bucks for the grow part A&B then once you get to flower you can drop another 20 and get the bloom A&B. These nutrients have a higher level of Cal and Mg because coco absorbs more of those nutrients leaving less for the plant so if I were you, I would either go with a part A&B coco nutrient line or a classic "trio" like FF but also add CalMag.

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[hyperluv]

I am in the process on setting up my 5x5 veg tent and will be using T5s. I will have 4 different bulbs per fixture. 6500K, 10000K, Actinic 460nm, and PowerVeg FS+UV. I will have some cheap LEDs as backup if more light is needed also.