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Yes, but not just any CFL... a targeted spectrum CFL such as WeedBulbs. To understand why, you need to understand that HPS is really a street lamp designed to put out an intense amount of lumens... about 6 times the equivalent wattage incandescent. Similarly, it puts out a lot of PAR... but even...

WeedBulbs.... I designed and now manufacture them. The phosphor mixtures used in our current 5 lamp models are based on solid science... and we are getting 5 star reviews on Amazon. It is very unlikely that Mr. Sunshine has even seen a WeedBulb. When it comes to delivering "usable" PAR per...

Please give me links on where you are buying your air pump, hydro bucket and reservoir, etc. I will do my best to help.

So are you growing weed or brewing beer(wort chiller)? When growing plants, the whole objective of the "cycles" is to get oxygen into the water. From everything I read, cannabis needs a LOT of air in the water. The normal one gallon exchange per hour on the attached sheet for...

Hey Mr. Green! Both the lights you are describing are tri-phosphor lights with mix of red, blue and green phosphors... but mostly green because that is what humans see the best. On the cool whites, there is more blue than red phosphors... still about the same green. On the warm whites, there is...

From what I have read, bubblicious is an autoflower variety. What this means is that it flowers based on time and NOT on a shortened day length. For best growth, you are likely better with 20/4 cycle even during flowering. 6500k vs 2700k T5 Both are going to have about 60% green... research...

You likely need to ask the manufacturers. Most HPS manufacturers that tout watts, refer to the lamp watts... but from tables I've seen the lamp "plus" the ballast is about 10% more watts. And if your total watts is actually 200 watts, then the ballast is running the bulb at around 180 watts...

Here are my suggestions: Put some ventilation holes in the board that holds your CFLs. Paint your board bright flat white with something like Kiltz primer. This will reflect light onto your babies instead of being absorbed as heat. Standard white light CFLs like you are using have...

Plants don't give a rip where the light comes from as long as they have enough. If they get too much of a color in the spectrum balance, they ignore it... this is why plants are green. HPS is notoriously deficient in blue with lots of heat loss. MH is deficient in red with too much green...

Put a liner in them.

It was a quick question, but not a quick answer... but one that I needed to be able to answer... so thanks! According to http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3550641/pdf/12298_2008_Article_27.pdf, you need 500 umol/s per square meter for best and most efficient growth. For a 20in x 20in...

What is the dimensions for " a PC sized grow box"?

Remember "Lumens is for Humans", not plants. Want to get the best lumens?... then go out and buy a green phosphor lamp... it will be the best lumens available, but your plants will use about 24% of the green light and ignore the rest. Forget lumens when comparing grow lights. The best grow...

When I launch my products, I am going to be giving 90% coupons in return for honest reviews... for peeps in this forum. Stay tuned.

It is all about efficiency and scale. From your plant's perspective, they don't care if the photons come from Gavita Pros or CFL... they just need enough photons in the proper balance. If not in balance, then your plants simply ignore some photons. Both HPS and standard CFL produce photons with...

Yes, they are likely the same.

Along that same line, this spectrum for "Pure PAR" has been PhotoShopped... http://www.htgsupply.com/Files/Products/AG_PurePARVegSpec.jpg The yellow spike should definately be green and I have never seen red that even... probably faked too.

Your probably right... it is just a lizard lamp... and with a little holy water... renamed to grow light. That happens a lot... I have fully tested three different CFL lamps labeled "grow lights" and all they are is standard bulbs that have been relabels. Same with HPS and MH, most are just...

In a few months, mine will be the best... ha. Well, that does not do much for you now. The light you have, Horti Powerveg UV, is the only UV lamp that I have seen so far that is marketed as a grow light. There are some bulbs that are marketed for terrariums... turns out lizards need UVB to...

Absolutely, the mountains of Columbia is where they grow weed... and it is in these tropical mountains that the UV Index is highest. One key to reproducing Columbian gold is getting 11 to 14 UV index "at the bud"... maybe higher... for a part of each day. My goal is to make it possible for the...