great tutorial @REALSTYLES .i am debating on building my own and wondering if i could use the bridgelux cobs instead since they are cheaper? i would need enough cobs for a 4x4
I built several fixtures using the Veros and even some of the El cheapo Ebay 50w chips. I needed better veg and side lighting options ASAP and on a budget, just couldn’t justify dumping money on new shitty T5 bulbs every other month when their performance started to diminish.
With veg anyway 5000k+ crushed it. Some Strains grew a little different/odd with all cool whites(GSC and Fat purple). The addition of 2700-3500k cobs(my vero 29 fixture) made a huge difference.
I haven’t tried the cree cobs yet but I plan to. As for the veros it seems like my 2700-3500 V29s fixture wasn’t that impressive in flower as side lighting alone, meh sized buds and sluggish over all growth on the cotton candy anyway. I also used a couple of my vero18 5000k+ china cob fixtures as side lighting on other parts of the tree and they produced impressive results. Insane frost and they really brought out the purple colour on my cotton candy cut, larger size also compared to my old T5 side lighting. These are all focused on 2 trees that also have 1 vertical 1000w hps and 3 400w hps fixtures wrapped around them. They are big enough that the 4 HPS fixtures still needed help. So I cant say these observations are solid just because of the other variables.
If your on a budget and want to get your feet wet, try the Veros or even the el cheapo Cobs work very well and stomp out t5s in everyway, heat(efficiency), price(if DIY) and overall growth. With the ebay cheapos you just have to be aware of under performing chips and voltage leak. You can build a very effective COB fixture for under $100 with a little creativity. One of my first fixtures uses 2"x2" aluminium tubing my buddy had sitting in his garage with a PC fan on the end. It works great as a heat sink. I used my seek thermal imaging camera to actually see the heat disperse throughout the fixture. . I sourced more of it from a local supplier to build a couple more fixtures.
I plan on building a cree fixture similar to
@REALSTYLES soon. Great work btw!