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I have a 90 gallon reef tank and wanted to do a DIY LED setup for it. I am not sure exactly where to start, since the spectrum is so blue. I wad thinking just 10,000k white LEDs, but the decent LEDs only go up to 5000k-6000k so I would need to add some blue diodes, but I have no idea which ones...

I just noticed hlg put out a new quantum board, these beasts look sexy! https://horticulturelightinggroup.com/collections/quantum-boards/products/qb324-with-slate-2-single-combo Up to 250 watts, and they use a mix of 80 and 90 cri diodes!

I'm curious to hear what kind of grams per watt you guys are pulling under efficient white LEDs. Ive pulled as high as 1.25 grams per watt under chinese blurple panels, sadly I havent pulled a harvest under cobs/qbs/strips yet but I am about to and it's looking promising. I am hoping to get in...

I just found out that hortilux makes a 600w ceramic HPS lamp. Spectrum looks interesting, yet awful as so much energy is wasted past 700nm. Interesting because of the huuuuuge green spike, followed by no yellow, leading into massive reds But then we get to the efficacy, as well as PPFD...

Just posting this light I just made, expect to see a lot more from me in the coming weeks as I get my strawberry banana seeds in and grow em under this bad boy. Plan to run Nectar for the Gods as well :) The goal of this light was to strive for insanely good uniformity to help with canopy...

Hi all Not sure if im retarded or just being overly cautious, but I can't figure out how the hell you remove wire you've poked into the connectors on the samsung strips (specifically LT-F562B). Anyone know how to remove the wire? The connectors are super flimsy so i dont want to break em if...

I am replacing the marshydro 600w and galaxyhydro 300w in my 2x4x5' tent and am looking for input on what im gonna build. So I have 2 different builds layed out so far #1 8x Samsung F564B LED strips @ 50w each $212.08 HVG-480-48B Driver $150.66 48v, 8.96a drive current, 400w power 1069...

Some quick stats on my light im building _________________________ 9x Vero 29 Gen 7 3500k 80 CRI COBs driven at 2100mah 38.7v 79W x 9 = 711W 48" x 48" = 1.49 m² 711W @ 49% efficiency = 348.39 PAR watts 348.39 PAR W x 4.75µmols = 1654.85PPF Accounting for 10% reflection losses = 1489.37...

Left to right, Sour Kosher (66-70 day), Double Alien 18 (63 day), and Fruity Chronic juice (50-55 day). Marshydro 600w on left and galaxyhydro 300w on the right. All grown in soil with FFOF, extra 30-40% perlite, dolomite lime, and I feed with GH flora series (4ml/8ml lucas), Calimagic, Liquid...

Here's several pictures I have from the beginning stages, they sprouted feb 18 but had 3 weeks of issues in 1 gallon smart pots which lagged em behind but they lookin incredible nowaday! The sour kosher (DNA genetics, 70/30) will the be the left plant, double alien 18 (dna genetics 40/60) in...

600w mars hydro on the left over the white widow, and a 300w galaxyhydro over the txomango on the left. White widow sprouted 10/3 and the txomango sprouted 10/16. So they're barely 2 months old. Currently on 30F, pics were taken on 28F though. Final pic is day 1 of flower...