I recently moved my system indoors due to the winter here in canada. I have two growbeds 4 ' x 2.5 ' x 8" and 120 gallons fish tank. I purchased hydro farm 6 bulb 4' t5HO 54w each ( 324 watts total). I was wondering whether to buy another one of the same for my other growbed or buy metal halide 400Watts.
If i decide to go the metal halide way how far from the plants should the light be in order for them to not get burnt but at the same time get good results. Feedback would be greatly appreciated. Thanks