Here's a bulb update on the LED T5s. Gotta say I was pleasantly surprised at the color. They are strong too, 10-15% stronger on the par meter than a fresh 3000K (which is bright)
Get the Bloom AgroLED iSunlight LED T5 Tube HTG Supply! Retrofit your existing T5 fixture with this advanced LED plant light technology for reduced power consumption, improved spectrum and longer life! Fast & discreet shipping guaranteed!
www.htgsupply.com
"Bloom spectrum 4′ lamps feature a combination of 450 nm blue, 660 nm red and 5,500°K full spectrum white diodes, and consume only 41 watts of power."
Here it is in a 2 bulb unit over a 50 gal, with a Geisemann Super Flora
105 PAR at the sub. My par meter is a old Hoppy diy and I suspect not entirely accurate. Its a good reference point to compare, but actual par may be more or less.
Here is with both LED, this is what it looks like by itself.
Par at the sub pushing 120
So decent color and powerful. I like it. I liked them so much I bought 2 of these -
AgroMax 4 Foot T5 LED Bulbs - Bloom | HTG Supply
"3500K + 660nm red enhanced output for blooming plants"
Its a good bulb too, like a suped up 3000K. Its about the same strength as the iSun. Here is what one of each looks like.
Too warm as you'd expect, needs more blue in the mix.
Here it is with an ATI Purple.
PAR at the sub just over 100
I'll be using the 3500K in 4-6 bulb units, basically replace some 3000K with it. On the 50 gal Im running the iSun+Geisemann like in the first pic
Here's the iSun along with Agromax pure par, Truelumen flora, and Powerveg 660
Dutchy off-season
Here's the 75 gal Landen tank withTruelumen flora, iSun, Powerveg 660, ATI purple, 3500K LED, Wavepoint UG