Re: Modern LED scrubber light
This is really taking fish keeping to a new level...... I like
just a thought with red and blue, is it true that blue is only needed if you are trying to flower or fruit a plant so dose that mean algea needs blue to flower or fruit? in which case we only need red or is that the other way around?
And a qustion at what ranges should red and blue be at?? should it be full red range and full blue range? I ask as I am looking at getting some GU10 light fittings to play with 1x red 1x blue they are 3w and pretty cheap. Just to see how much quicker I can grow algea under a coloured light nm specific range.
I have just a small plastic canvas setup up with 2 panels each panel is lit by a 3w GU10 globe warm white 4000k and seems to be doing pretty well for the size. the lens are a little to focused tho I think they are 20*.
A week and a half in and this is what they are like.. one panel has been in longer the one on the right is older by about 6 days, both have had a scraping (very little came off) the count on the canvas is too low I need to get some #14 as the water dosent stay on the canvas that well oh and I didnt seed them either. With higher wattage they should do well then ill make a bigger one after the experiments of led when these screens are mature and move the skimmer on.
http://i694.photobucket.com/albums/v...o/IMG_3791.jpg
http://i694.photobucket.com/albums/v...o/IMG_3792.jpg
http://i694.photobucket.com/albums/v...o/IMG_3793.jpg
http://i694.photobucket.com/albums/v...o/IMG_3789.jpg
Re: Modern LED scrubber light
Reminder, LED's are for experimenting only, not results.
You don't need to seed. If it's going to grow, the screen will be covered thick in 7 days.
Re: Modern LED scrubber light
Quote:
Originally Posted by SantaMonica
Reminder, LED's are for experimenting only, not results.
You don't need to seed. If it's going to grow, the screen will be covered thick in 7 days.
Some points:
1) You are getting pretty negative on LEDs. They ARE the future, as soon as people figure out how to implement them correctly.
Until then, expect a lot of failures. Sound like ATS history?
2) From reading the forums, there are PLENTY of non-led failures still, even when done according to faq.
So never make quick assumptions about root cause.
3) You may in fact need to seed.
Kcress seems to have proven that in his build thread.
Re: Modern LED scrubber light
I think I might have found a path to the future or at least something interesting.
http://www.mouser.com/ProductDetail/Led ... oVIu8lRQxj
If you check the specs they seem very good ( a lot of high wavelength red and some low blue )
From what I have researched so far these two conditions are not in many leds.
By the way the part of my scrubber that is only lit by leds is working.
Still thinking about going vertical.
They also have a 10 watt 661 nm deep red led (expensive $30)
Re: Modern LED scrubber light
Quote:
Until then, expect a lot of failures
Yes, and I don't want the people that come here looking to fix their tanks to think that an LED will do the fixing, because then they'll say they tried it and that scrubbers don't work.
Quote:
there are PLENTY of non-led failures still
There is not one. Show me if I missed it.
Quote:
You may in fact need to seed. Kcress seems to have proven that in his build thread.
You made my point. Thousands of people have grown thick gha in the first 7 days of a screen's life, without seeding. Hundreds who have tried seeding did not get any better growth, but did end up with a spike from the dying of the seed. Thus, seeding is not recommended if the goal is to fix the tank. I have over 100 builds that I have not posted yet, and none of them are seeded.
Re: Modern LED scrubber light
Quote:
Originally Posted by inkidu
Interesting.
Spectrum looks fairly similar to Cree "Neutral white", but possibly a bit better, yes.
It is 2000lm/40W = 50 lm/W. Not bad, but not great either.
Hey: If you build a vertical, it might be fun to do LED on one side, and CFL on the other.
Real scientific comparison that way.
Re: Modern LED scrubber light
email was sent to me... my quest continues to find out what band of red we really need as this email states its for flowering and fruiting. It seems we can find out heaps of what the algea needs to feed and flow etc but light is still a problem to pin point.
I know you guys are going lower kelvin cfls to get some red in there or is it orange that we are after??
Can anyone point me in the right direction to try and figue this one out.
Dear Mr.Shane Grant,
Thank you for your prompt reply!
Here I send the PI of quad band 50w led grow light for you as attached file.
All of our price are in $US.
Blue light is good for vegetatives and the red light is good for flowering and budding, you can choose the ratio of the light, which have wonderful efficacy for the plant.
Vegetative(Dual-band): Red: 620~630nm / Blue: 450~465nm R/B ratio: 8:1 or 7:2
Flowering(Dual-band): Red: 660nm / Blue: 450~465nm R/B ratio: 8:1 or 7:2
Vegetative(Tri-band): Red: 620~630nm / Orange: 610~615nm / Blue: 450~465nm R/O/B ratio: 7:1:1
Flowering (Tri-band) : Red: 660nm / Orange: 610~615nm / Blue: 450~465nm R/O/B ratio: 7:1:1
Vegetative(Dual-band): Red: 620~630nm / Orange: 610~615nm / Blue: 450~465nm/White R/O/B/W ratio: 6:1:1:1
Flowering (Dual-band) : Red: 660nm / Orange: 610~615nm / Blue: 450~465nm/White R/O/B/W ratio: 6:1:1:1
Yours sincerely,
Michael
I was heading in the quad band vegative direction what do you think??
Re: Modern LED scrubber light
Re: Modern LED scrubber light
I just bought 6 of these 10 watt deep red 661 nm leds ( wavelength is in the zone for chlorophyll A)
http://www.mouser.com/ProductDetail/Led ... 7STztIY%3d
Combining those with 6 of these 5 watt warm white ( they have a particular high red wavelengths and low blue )
http://www.mouser.com/ProductDetail/Led ... tHhobz8%3d
I am hoping the mix will let the different alga be satisfied through the natural progression of the screen.
Re: Modern LED scrubber light
Just a note (copied from web):
Within the algae there are 4 types of chlorophyll a, b, c (c1 and c2) and d.
Chlorophyll a is found in all photosynthetic algae, whereas chlorophyll b is confined to Euglenophyta and Chlorophyta.
Chlorophyll c is found in Dinophyta, Cryptophyta, Rhaphidophyta, Bacillariophyta, Chrysophyta, Xanthophyta, Phaeophyta and Prymnesiophyta.
Lastly, chlorophyll d is a minor component of many red algae.
I think green hair algae is Chlorophyta Derbesia.
So a mixture of A+B is good.
However, it might even be a win to emphasize the B spectrum, to help it out compete algae that only has A.
