Going to throw away 17 b.lux eb gen 2

Hi everybody. In may 2020 i bought a lot of bridgelux eb gen 2 ,4000k and 3000k,a meanwell 480 in constan current 700/1400 ma,thick aluminum frame,little vents upon it,air in and a over 500m3 exaust in a litltle room with a max height of about 6 feet for 3 x 3 1/2 area. I had a 315w cmh, too hot for for the summer,with a lot of noise from the fans even in the winter. I set up the diy with 16 or 17 2 feet strip.At whatever height and whatever wattage(150 w st the wall) i had and i have bleaching and strong from the start,in a tent,4x2x6,mag def.I correct the temp in the winter up to 25celsius,humidity,fabric pot,really soft with watering,i bought a ro system,change from canna professional plus up to a home made mix with the apogee recipe from the weed man on youtube,with vermiculite, grams of dolomite,calcium,peat for a final ph of 5.5/5.8. I have try everything,even with 50 w from five strips running under nominal current ,at 2,3,4ft at whatever height i can immediately observe mag def and purple stems. I can slow down that with epsom salt and foliar application but at the end,when i move to flowering starting very low with watts,from 150 slowly increasing,with 17 strips in a 3x3 and 1/2 ft room,at 3 ft o whatever i tried positioning the light a really fast yellowing slowed just by mag foliar application.
What can i do. I m going to throw away everything,with lot of wasted money to come back with this 70w philips colour master cmd(cmh) that i can buy at 15 euros,with a 25 euro 70w dimmer for each one to better cover the area,better control the temp without dimming,putting on or off some of them.
Maybe i had less purple steems with some uv added,for the calcium .
I Really appreciate any help.

Thank you guys

so you have a 3x3.5 area and want to blow 480W meanwell eb2 strips on this.
minimum youre giving is 5 times 50W or 50W in total ?
50W would be too low, your plant wont show any stres sings for sure.
250W would be too high for this area when you start your plants and want to avoid the problems youre seeing.

do you have a dimmer?

Hello,i m very poor in english. I have a tent and this little room something more than 3x 3 and 1/2 ft x 6 ft height. In the tent i m running 5 strips,cc,dimmered and adsorbing 50w,cause I can't go up without immediately observing red stems and mag def yellowing. In the room ,yes,i put 16 or 17 strips but never can't stay ever at 250w, in flower,and starting from 200,and going down to 150w. I put at 3ft over them,dimmering, supplying them with foliar epsom salt till i can,in the flowering,with also a lot of purple stems,just orrible.

Never ever i can think of using 480 watts.That just kill them in hours.

you can work with meters if you prefer.

you have about a square meter there right?
i wonder that your plants cant even take 50W total.

i do have some experience usng bridgelux eb3 3000K, while the brand itself as the color temp isnt the problem here.
it sounds like a intensity problem yes, but the 50W making me scratch my head.
see my thread where i just posted my recent plants under 85W of 3000K bridgelux strips, i am very picky regarding stress signs and i think they do great atm.
i can understand that 250W are stressing your plants, as its pretty much the same for me in my sqaure meter tent, while 150W are a safe bet for flower.
an my strips should put of a few percent more light, i also only use them in highly refelctive tents, leds mounted wall to wall, and be quite close with my light always.

i am pretty sure the lights aren't the problem. I have 515 watts of LED over a 3.5 x 3.5 space and not having any of the issues you're describing. you should be shooting for 35 watts of led per square foot of grow space for flowering.

i sounds like you simply disconnect "unused" strips, maybe really try a dimmer so you can dim all your 17 strips.
it will be softer light that way and your plants should do better.

I had similar issues, using the same strips, I read THIS POST by @Prawn Connery, some stuff about VPD, and after increasing the temps and increasing feed, the issues with subsequent runs were resolved. Same lights, same plant, more heat (25C minimum, 29C target) and more food and the problem disappeared. However if I let the night-time temps differ too much from the day-time temps some similar issues arose.