Dual Spectrum 65 High Output Fluorescent Bulbs - $23 and 3400 lumens - and from my understanding these arn't dual spectrum, they just offer either red or blue. The true multi spectrum red and blue bulbs in one are even more expensive and even more of a waste, a fuller spectrum is good but equal parts red and blue is a waste of electricity per usable lumen output. If you want multi spectrum throw a few 6500's in with your 2700s
Home depots equivalent (65w) is about the same price and 3900 lumens. It's not like stealth hydro bulbs are better, they just tell you which ones to buy because most people don't know how to read kelvin rating on bulbs and need replacement bulbs and think their system uses something special.
The 23w are 1600 lumens. So for $23 you could buy all 12 of the 23w and end up with 19,000 lumens that are more easily dispersable amoung your plants than one 3400 lumen bulb that can only be directly near part of one plant. High wattage bulbs send their light further however still cannot beat proximity to plants. 23w from 2 inches should be about the same as 65w from 4 inches. Big bulbs do however produce less heat compared to lumens but anyone that complains about CFL heat is alittle crazy.
The link I sent you is a case of bulbs best suited for flowering. You can find the same case in the spectrum for vegetative growth (the flowering bulbs would work just not as well) and you can also find single and 4 packs of the same bulbs at home depot with the same 9 year warranty
Was looking at stealth hydro again and their prices are just really outa whack. Their odor eliminating bulbs are $60 a piece when the company that came up with the technology sells theirs in a 2 pack for $20.
