Root Space in Trays/Wattage - Hydro

Southern

Active Member
Hey there, im about 2 weeks into flowering, doing Hydro's, two trays, 4 plants per tray. Thing is the roots in the trays look like there pretty compact now, will this be a problem? The water is still flowing well but im not sure if this will fuck up the nutes being distributed evenly down the line

Also was wondering if my 600W HPS will do for the size of the grow im doing, the tent is about 1.6m x 1.6m x 2m, im thinking about putting another 400W in there cause the ventilation is good, not sure though

links to my pics of the room, sorry for the quality of the pics: https://www.rollitup.org/2259844-post2.html
 
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