Glad you noticed I've been stalking you. Stumbled across this forum and your threads by researching the Diamond Series LEDs. You and PG really know some stuff (or so it would seem). Opened my eyes to a load of new things, that's forsure! Much Respect.
threshers, now that is a beautiful shark!! ive caught hammers, bulls, lemons, tigers, makos on a fly rod, and last but not least, FRESHWATER bulls!!! right here in the SE, fishing up river from the brackish waters.
If they grew long and thin, they must have been stretching for more light, try dropping the light down a bit closer. I have to add support to my branches because they get too heavy, most growers do. I use garden wire to support them, otherwise they would hang down too low and possibly snap.
I have a couple of Hydro Hut LEDs in tents ( I liked the idea of low heat). They seem to do pretty well, you don't have to water them as often, which turned into a problem...because they didn't need watering (bout once a week), heck I watered them anyway, with was too much....they grew up long and thinm and finally snapped under their own weight....now obviously I am no expert...ever heard of this?