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https://allpinouts.org/pinouts/connectors/motherboards/motherboard-cpu-4-pin-fan/ Maybe u got "some AMD" with red as +12V.

1,5m long x 1m wide x 1.2m height box. Wattage should be ~65-70w x8. Was plan scrog when hydro, but turns out to LST and soil when meet roots troubles on hydro.

Here's some pics of mine Bubba Island Kush and GSC short(due to swap em from hydro to soil on veg) plants under CXM-22's 3000k 90cri. Should be week 6-7 of flowering. Those cobs are great and gave me 22-25C box temp instead of 30-32C with HPS before.

Yep. PH meter is one of first things to buy when grow. Bcs PH problems looks tricky sometimes.

Doubt its something light related. For me its looks like overwatering/overfeeding while they small or/and ph. That green stuff on soil can be sign of overwatering for me. Try not to watering it almost every day maybe, but once per week and watering again when they got leafs looks wither. Sprayin...

You watering soil every second day? Also what ph of water you watering soil with?

Im still with it. Horticulture spectrum was always cost more than regular lamps anyway.

Hey! Is there any chance to see those CXM-22 HortiLum in your shop in future? https://download.luminus.com/datasheets/Luminus_COB_Horticulture_Gen1.pdf

From some local russian manufacturer(1radcom). With ~40$ per meter cost. Even cheaper than CPU-coolers i was plan to use first.

Yep. Should think about lower height. Thanks again.

Looks like 500m3 fan blow air good thru mine 90cm cooltube. So my point was to use only main fan without any 12v fans. Tube should look like this but with plastic top part:

Got one more noob question: should i have any chip temp problems with this setup or it will work fine?

Thanks.

Voltage is ok on both. Im not sure about watts: will it be enough to have 75w per COB on 1.4A(with 150w driver) or COBs will use more than 75w on 1.4A( so i need >150w driver)?

Hey! Was order some CXM22's and got question about drivers. I want power them: 2 COBs in serial on 1.4A. ELG-150-C1400A will be enough or i need HLG-185H-C1400A for 2 CXM22 on 1.4A ?