Recent content by ecofrog

Thats funny, your right now that i think about it about NASA report. I never read the actual report nor the years after followup but only read the summery which talks about appeal and id of problems. TopLED lights have what appears an aquamarine (490 ish) and a yellowish green (580ish). Their...

I can only assume that gro light designers used green because of NASA reports. But now looking back and reading the follow up science, its obvious why G helped NASA... as hose has said many times, 2 or 3 colors aint enough to do all what a plant needs to do. Even adding G to B/R spectrum will...

I use t5 HO's for veg, 100% cool white. Ive been doing it for years and have never found a better system watt for watt and temp issues. I use virtually 100% HPS in flower as i have been doing it for years and have never found a better system watt for watt but temp sux. I found that the the shock...

yes veg. I use my t5's as veg also for seedlings, herbs and other leafy greens. I considered buying some warm whites to compare but these were already expensive with shipping and engineering so i figured test cool first. I also like the idea of adding reds to whites and have already discussed...

2 is always better than one because you have 2 different angles which gives more penetration. 2 x 300w will yield more than 1 x 600w.

I special ordered a few cool white LED 3w x 100 from topLED. I plan to run a few experiments and wondered if anyone else has had any experience with full white LED's? I bought these are a few reasons... No matter how close to t5 you are, you can never get over ~ 550umol. I would like to...

This is interesting because i just logged on to read about this issue. If you were evacuating your aircooled hoods, it seems that the heat is roughly the same with the toplight LED. But if have open air cooled HID, the LED's are significantly cooler. I was gonna ask if anyone else noticed this...

My mover has a move distance of about 10-15". And because they only use a 15w, on a 600w light that is drawing about 650w from the socket, that is only a 2% increase in watts with the footprint going from 16sqft to 20sqft which is an increase of 25%. I found that i could go from 1000w bulbs to...

re: Advanced LED vs TopLED Side By Side Comparison - Hawaiian Snow & Blueberry Yes, this is roughly what im saying.

re: Advanced LED vs TopLED Side By Side Comparison - Hawaiian Snow & Blueberry I have old style 3w x 100 full spectrum. I dont know how it compares to your fixture but at ~12" and a ~ 400sqin pattern, it measures ~600umol under SUN mode of the apogee which i assume is the proper setting to full...

It seems from everything that i read that the separating into spectrum is all done with software as opposed to some specialized hardware in the sensor itself separating wavelengths which is good news as my smartphone has everything i need except a sensor and the program. A bulb powered on a...

re: Advanced LED vs TopLED Side By Side Comparison - Hawaiian Snow & Blueberry Then they are mistaken in their measurements. I would be surprised if they were 1/2 that averaged across the fixture.

In the past, there were few lighting products so we didnt need to understand spectrum, we just bought bulbs and used the Apogee to place fixtures and measure DLI. But with LED's, spectrum R&D is almost infinite and the need for a more advanced meter is apparent as we are discussing. We can...

Here is some info on Illumitex versions of spectrum. F3 is really heavy in red and has green and no white? Anywho... i was looking around their website and they dont have any distance or even wattage. But it says it should replace a 1000w HID so as to placement? I would place it the same as a...

re: Advanced LED vs TopLED Side By Side Comparison - Hawaiian Snow & Blueberry The apogee PAR meter is less than $400 including sensor. There are 10,000's or more of those meters around the world and they are a real work horse in many of the field sciences and business. Ive had mine for years...