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 watt, HPS is a joke... incorrect balance of spectrum, not enough blue light and way too much heat.
However, if you insist on using HPS... our PowerBLUE lamp is designed to augment HPS with blue light...
http://www.amazon.com/PowerBLUE/dp/B00YELLHP8
You will need more than a couple of bulbs. My recommended range is 1 to 2 lamps per square foot. As a minimum for healthy growth in most plants, use 1 lamp per square foot... so 24 would cover 24 sq ft. For most efficient growth with most plants, use 1.5 lamps per square foot ... so 24 would cover 16 sq ft. For better yield, use 2 lamps per square foot... so 24 would cover 12 sq ft. Even more light can be used with crops like cannabis, but with diminishing returns... some commercial cannabis growers that are not concerned with efficiency use an equivalent of 4 lamps per sq ft ... so 24 would cover 6 sq ft.
My recommendation for growing cannabis is to start with 1.5 lamps per sq ft and then add more later if you are not achieving the results you seek.
There are 3 main lamp models to choose from:
• PowerMAX's phosphor mix is designed for the full plant cycle (veg and flower) and works best when on a budget.
• VeggieMAX will have advantage of faster/quicker vegetative growth.
• FlowerPOWER will have an advantage during the flower production cycle.
Dual Stage - If using VeggieMAX during veggie stage and FlowerPOWER during the flowering stage, slowly change the bulbs over a period of several days to allow the plant to adjust to the change.
Single Stage - All three (PowerMAX, VeggieMAX and FlowerPOWER) have a sufficient light spectrum for healthy plant growth, so can also be used as single stage grow lights for plant growth... some variety of plants will respond better to the various spectrums.
WeedBulbs vs HPS
If you want to do a test of equal watts of WeedBulbs and HPS, I will
guarantee that you will get more weed from any combination of PowerMAX, VeggieMAX and/or FlowerPOWER versus HPS or your money back.
WeedBulbs vs Standard White Light CFL
If you want to do a test of equal watts of WeedBulbs and standard white light CFL, I will
guarantee that you will get more weed from any combination of PowerMAX, VeggieMAX and/or FlowerPOWER versus standard white light CFL or your money back.
WeedBulbs vs LED
Yes, LED is a little more efficient in terms of PAR per watt... but the cost of LED is crazy for the closet grower. If you want to do a closet grow test of equal dollars of WeedBulbs and LED... including electricity over a one year period, I will guarantee that you will get more weed per dollar spent from any combination of PowerMAX, VeggieMAX and/or FlowerPOWER versus LED or your money back.