A few years ago, the thermal engineering of COBs left a lot to be desired. Ganging up chips in close proximity to each other risks shorter lifespans due to heat. Now higher-end LEDs can deal with the excess heat, so I think we'll start seeing some COB configurations that work well. When I...
While I am a die-hard LED fan (for now), if anyone ever asks what I would recommend instead, it is CMH! The only other lighting technology that comes close (but is seriously deficient in the power department), is a certain Full Spectrum Fluorescent tube, which shall not be named, lest I get...
Surely. Examples of cotton top can be seen here:
Sorry for the camera white balance problem in the first pic. All but one of these was turned around (CT eliminated) by increasing nute delivery.
Also, your tip burn may be a function of the root's exposure to the nutes. Coco has the...