|
01/28/2016, 01:03 PM | #726 | |
Either busy or sleeping
|
Quote:
For 18 3W Deep Reds, you have 18 * 2.2 = 39.6V or 18 * 2.4 = 43.2V so either way you are under the "rating" of 48V, and at 700mA you would have wattage output of 27.72 and 30.24, so technically you could use one LPC-35-700 and worst case (2.4v Vf per LED) you would be running at 90% of rated load. If you used two, each would be running at 45% rated load
__________________
Algae Scrubber Basics!!! GOOGLE "algaescrubber zoho" General Interest Forums --> Advanced Topics --> Algae Scrubber Basics (sticky) --> POSTS #3251-64 (Basics), #5206 (Cleaning), #6884 (LEDs), #729 |
|
01/28/2016, 02:39 PM | #727 | |
That guy...
Join Date: Nov 2004
Location: Illinois
Posts: 1,218
|
Quote:
Ok I pretty sure I'm understanding this correctly. I could use this LPV-60-24 24V 2.5A 60W and run 3 parallel strings each running at about 833mA or is this too much? I could use this LPV-60-15 15V 4A 60W and run 6 parallel strings each running at about 666mA?
__________________
The dream that is now a memory - http://reefcentral.com/forums/showthread.php?t=2550891 |
|
01/28/2016, 03:07 PM | #728 |
Either busy or sleeping
|
The issue is that a CV device is not really a "driver" but is more like a power supply. Usually you use a CV source to power something that has a PWM chip on it or something. The power supply is not a driver, it is powering a driver (which requires a CV source)
A CC device is a driver and can be connected to an LED array directly. It's sort of like a power supply and driver combo, or simplicity's sake. A string of LED will have a range under which they operate, and that means Vf will vary dependent on the current and the junction temperature. So Vf is hard to "force" or rather if you try to force it, the current will vary and if you are forcing a voltage, some LEDs will want one current, some will want another, and then you have components fighting each other and the result is heat or operating outside of their normal parameters. If I got that all wrong, someone please feel free to correct me with the "you're wrong dumba--" stick. But the key is that if you are going to use a CV power supply, you have to have the exact voltage on the load side that matches the power supply voltage. Meaning, you can't do 6 strings of 3 or 3 strings of 6, because your Vf does not equal 24V. Your Vf of your strings has to equal 24V.
__________________
Algae Scrubber Basics!!! GOOGLE "algaescrubber zoho" General Interest Forums --> Advanced Topics --> Algae Scrubber Basics (sticky) --> POSTS #3251-64 (Basics), #5206 (Cleaning), #6884 (LEDs), #729 |
01/28/2016, 03:13 PM | #729 |
Either busy or sleeping
|
Vf for each LED is inherent to the LED. If you try to force a Vf that is higher than what the LED is designed for, boom.
current, on the other hand, is what the LEDs were designed to operate under, in a range. So a I(max) of 700mA means you can run that LED at 0-700mA and it's Vf will vary based on the current being pushed through it (and it will vary a bit based on junction temp heat as well) If you go the other way and force Vf, the current will vary based on the LED characteristics and the junction temperature. But the problem is that LEDs are not designed to be ran under CV, so you can have some really bad things happen. For instance, if an LED will operate with a Vf of 2.3V and it will hold that pretty steadily for an input current of 400-650mA, what will the amperage be if you supply 2.3V constant? The answer is, you don't really know. It could try to draw 400mA or 650mA and you can't really control that, not with a basic power supply. So I would just focus on CC drivers. Much simpler
__________________
Algae Scrubber Basics!!! GOOGLE "algaescrubber zoho" General Interest Forums --> Advanced Topics --> Algae Scrubber Basics (sticky) --> POSTS #3251-64 (Basics), #5206 (Cleaning), #6884 (LEDs), #729 |
01/28/2016, 03:32 PM | #730 | |
That guy...
Join Date: Nov 2004
Location: Illinois
Posts: 1,218
|
Quote:
__________________
The dream that is now a memory - http://reefcentral.com/forums/showthread.php?t=2550891 |
|
01/28/2016, 05:23 PM | #731 |
That guy...
Join Date: Nov 2004
Location: Illinois
Posts: 1,218
|
@Floyd
I know you recommend running blues at half power, dimmed or diffused. I was going to run my blues in series. I noticed that the blue Vf (DC 3.0-3.4V, 700mA/1W) is different than the red Vf (DC 2.2-2.6V, 750mA). However, it's my understanding that since the Vf of the red in front of the blue is lower the blue will have the same Vf as the red or slightly lower due to inefficiencies. Essentially the blue will not burn at 100% because it is in series with reds that have a slightly lower Vf. Is this correct or do I need a completely different driver for the 3 blue LEDs?
__________________
The dream that is now a memory - http://reefcentral.com/forums/showthread.php?t=2550891 |
01/28/2016, 06:07 PM | #732 |
Either busy or sleeping
|
In a series string with a CC driver, the Vf will be whatever it is at that current. So your reds will drop 2.2V and your blues will drop 3.0V, etc. It doesn't matter.
Are your blues 1W and reds 3W? If so, just put them in series. The 1W blues will have a lower radiometric flux output than a 3W blue, so that's actually good - it simplifies the build. You won't have to do anything funky like putting a pair of blues in parallel within the series string (current divider)
__________________
Algae Scrubber Basics!!! GOOGLE "algaescrubber zoho" General Interest Forums --> Advanced Topics --> Algae Scrubber Basics (sticky) --> POSTS #3251-64 (Basics), #5206 (Cleaning), #6884 (LEDs), #729 |
01/28/2016, 11:01 PM | #733 | |
That guy...
Join Date: Nov 2004
Location: Illinois
Posts: 1,218
|
Quote:
__________________
The dream that is now a memory - http://reefcentral.com/forums/showthread.php?t=2550891 |
|
01/28/2016, 11:40 PM | #734 |
Either busy or sleeping
|
Wire one pair in parallel within the series.
__________________
Algae Scrubber Basics!!! GOOGLE "algaescrubber zoho" General Interest Forums --> Advanced Topics --> Algae Scrubber Basics (sticky) --> POSTS #3251-64 (Basics), #5206 (Cleaning), #6884 (LEDs), #729 |
01/29/2016, 12:12 AM | #735 |
That guy...
Join Date: Nov 2004
Location: Illinois
Posts: 1,218
|
Very clever! That will be perfect! Thanks!
Next time in Iowa I owe you a cold one!
__________________
The dream that is now a memory - http://reefcentral.com/forums/showthread.php?t=2550891 |
03/07/2016, 06:29 PM | #736 |
Registered Member
Join Date: May 2004
Location: Dallas, TX
Posts: 11,033
|
with a really good scrubber, can you avoid using RODI water and just go tap water in?
__________________
Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape |
03/07/2016, 06:34 PM | #737 | |
Registered Member
Join Date: Jul 2009
Location: Iowa
Posts: 9,671
|
Quote:
Then there's periodic maintenance the municipality will perform that could be damaging to your tank but not you so they won't notify out. And then there's possible changes in how they treat. Then there's Flint Michigan.
__________________
rebuild and recovery log: No more red house, you'll have to click on my name and visit my homepage! You can check out my parameters at reeftronics dot net website and look for my username. Current Tank Info: 180g mixed reef w/ a beananimal overflow to a dolomite RRUGF. | 20g long G. Smithii Mantis Tank |
|
03/07/2016, 09:47 PM | #738 |
Registered Member
Join Date: May 2004
Location: Dallas, TX
Posts: 11,033
|
yikes! ok ok...
maybe just let TDS drift a little..
__________________
Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape |
03/11/2016, 03:28 PM | #739 |
Average Joe
Join Date: Aug 2013
Location: A Texan, in Franklin, WI.
Posts: 594
|
This is a controlled experiemnt. LED growth vs CFL.
Well, I pulled the trigger and bought 2 x 30 W Grow Light LEDs. ** The lights I got were NOT plug and play! I kind of expected that however when I read that somewhere. *Luckily- I save things that I think might be usefull on another project in the future! I had several 5ft 3 prong/wire plug and wire I cut off my old/used PC lights. So I got out my soldering iron and solder- that gets used once every 5 yrs or so, and soldered and taped the wires up- now like new!- freebie too. Here are the lights- I bought two of them- shipped to me for less than $40 total. After installing the wire/plug. Did NOT require any type of ballast/transformer, etc. I used my noodle and devised a free, easy way to hang the lights at the existing area using some old (saved for future projects) fiberglass rod sections from an old tent I once had. I used some old high tensile line salvaged out of my sailing gear. Todd_Sails- right? The experiment is one sheet has CFL's and one has LED's. I cleaned both sheets equally and at the same time this time so they both start even. I'm also tried Aluminum Foil for the top splash guard this time, instead of clear plastic. The alum. foil kinda stays creased around the pipe better than plastic wrap, and it will block the light too. You can be sure I'll post back with the results, Todd
__________________
180g Reef- 75+ different Corals; 14 fish; DIY Coast to Coast Overflow 3 x 120W Full Spectrum/Dimmable LED's 125g DIY sump- Reef Octopus nw200-6540B - 40B FT- ~320gallon system total DIY Large ATS Current Tank Info: 180g- C2C overflow- 125g sumpk 40B FT; Lots of Coral- mostly sps |
03/11/2016, 03:49 PM | #740 |
Either busy or sleeping
|
Watch the screen with the LEDs on it for signs of photosaturation. The intensity of LEDs is much more than CFLs at the same distance. May need to split up photoperiod or reduce it.
Todd...sails?
__________________
Algae Scrubber Basics!!! GOOGLE "algaescrubber zoho" General Interest Forums --> Advanced Topics --> Algae Scrubber Basics (sticky) --> POSTS #3251-64 (Basics), #5206 (Cleaning), #6884 (LEDs), #729 |
03/11/2016, 03:55 PM | #741 |
Average Joe
Join Date: Aug 2013
Location: A Texan, in Franklin, WI.
Posts: 594
|
Thanks Bud/Floyd/Turbo.
In my hanging method, it's easy to simply slide the bracket along the rods to increase/decrease distance to the screen. I'll be monitoring for this, as you say Captain, steady as she goes..... Yes, Todd Sails, catamarans mostly, Currently have a Nacra F18 Infusion
__________________
180g Reef- 75+ different Corals; 14 fish; DIY Coast to Coast Overflow 3 x 120W Full Spectrum/Dimmable LED's 125g DIY sump- Reef Octopus nw200-6540B - 40B FT- ~320gallon system total DIY Large ATS Current Tank Info: 180g- C2C overflow- 125g sumpk 40B FT; Lots of Coral- mostly sps |
03/11/2016, 03:59 PM | #742 |
Moved On
Join Date: Aug 2014
Location: Galveston Co.
Posts: 853
|
my money on the leds. those will work perfect imo..
|
03/18/2016, 08:22 PM | #743 |
Average Joe
Join Date: Aug 2013
Location: A Texan, in Franklin, WI.
Posts: 594
|
OK, 7 day update:
** it seems the 3 x 100W equivalent 2700K CFL bulbs are initially growing slightly more green algae than the LED's! I"ll keep monitoring
__________________
180g Reef- 75+ different Corals; 14 fish; DIY Coast to Coast Overflow 3 x 120W Full Spectrum/Dimmable LED's 125g DIY sump- Reef Octopus nw200-6540B - 40B FT- ~320gallon system total DIY Large ATS Current Tank Info: 180g- C2C overflow- 125g sumpk 40B FT; Lots of Coral- mostly sps |
03/19/2016, 02:22 PM | #744 |
Average Joe
Join Date: Aug 2013
Location: A Texan, in Franklin, WI.
Posts: 594
|
** ** OK, re-do 7 day update;
I looked again, closer, with the ATS lights off (mid day) It IS a little thicker growth, and it's GREEN! I guess even with the white light while the red LED was on made it look much darker.
__________________
180g Reef- 75+ different Corals; 14 fish; DIY Coast to Coast Overflow 3 x 120W Full Spectrum/Dimmable LED's 125g DIY sump- Reef Octopus nw200-6540B - 40B FT- ~320gallon system total DIY Large ATS Current Tank Info: 180g- C2C overflow- 125g sumpk 40B FT; Lots of Coral- mostly sps |
03/19/2016, 03:43 PM | #745 |
Registered Member
Join Date: Jan 2006
Location: North Bay Area, Peoples Republic of Kalifornia
Posts: 325
|
I'm designing a sump for my Turbo L2 Rev 3 and just read that lifereef uses filter foam and or polyester pads in lieu of filter socks. Would polyfilter be a good first stage of the sump or would polyfilter starve the scrubber?
Does anyone have plans or a good design for an ATS/ bubble eliminating sump? I'm not planning on having a protein skimmer but would like to leave room for one in case the need arises. |
03/19/2016, 04:31 PM | #746 |
Average Joe
Join Date: Aug 2013
Location: A Texan, in Franklin, WI.
Posts: 594
|
My DIY ATS hangs over my sump, near the RP intakes (2 of them)
I use a power head to direct some flow in my sump, and keep most all bubles out of the intake. No answer on the filter pad ? from me, I rarely use a filter sock/bag anymore, don't seem to need it. Water is crystal clear
__________________
180g Reef- 75+ different Corals; 14 fish; DIY Coast to Coast Overflow 3 x 120W Full Spectrum/Dimmable LED's 125g DIY sump- Reef Octopus nw200-6540B - 40B FT- ~320gallon system total DIY Large ATS Current Tank Info: 180g- C2C overflow- 125g sumpk 40B FT; Lots of Coral- mostly sps |
03/19/2016, 10:32 PM | #747 |
Registered Member
Join Date: Feb 2007
Location: Santa Monica, California, USA
Posts: 2,511
|
Keeping more food particles in the water, by not using a sock etc, allows your periphyton to grow to natural reef levels; this will keep the water very clear.
__________________
Inventor of the easy-to-DIY upflow scrubber, and also the waterfall scrubber that everyone loves to build: http://www.reefcentral.com/forums/showthread.php?t=1424843 |
03/20/2016, 12:14 AM | #748 | |
Registered Member
Join Date: Jan 2006
Location: North Bay Area, Peoples Republic of Kalifornia
Posts: 325
|
Quote:
|
|
03/20/2016, 07:09 AM | #749 | |
Average Joe
Join Date: Aug 2013
Location: A Texan, in Franklin, WI.
Posts: 594
|
Quote:
History has shown the above you mentioned, quickly turn into nitrate factories. So yes, don't use those either. SM is right on this one. He (and Turbo) has done alot of research and have a lot of experience on these subjests.
__________________
180g Reef- 75+ different Corals; 14 fish; DIY Coast to Coast Overflow 3 x 120W Full Spectrum/Dimmable LED's 125g DIY sump- Reef Octopus nw200-6540B - 40B FT- ~320gallon system total DIY Large ATS Current Tank Info: 180g- C2C overflow- 125g sumpk 40B FT; Lots of Coral- mostly sps |
|
03/20/2016, 10:38 AM | #750 | |
Registered Member
Join Date: May 2004
Location: Dallas, TX
Posts: 11,033
|
Quote:
I triple the support on this. Any unidirectional obstruction to flow in the form of filter socks or foam blocks, bags, ... is unnatural and eventually destructive. Not only does it create a nitrate factory, it removes a key block in the food chain that is critical to coral health and growth. Those "filters" may make the water "look" better but it's not. It's clear unhealthy water. In fact, the ATS concept is superior to chaeto IMO because the water flows over it, not through it. In fact, even with ATS, the biggest boost in life comes with an alternating flow so any ancillary pickup of matter becomes food to the ATS without accumulating in it.
__________________
Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
algae scrubber/heavy metals | charles matthews | Randy Holmes-Farley | 6 | 11/03/2016 08:32 PM |
xenia scrubber instead of algae scrubber? | dolt | SPS Keepers | 40 | 04/07/2011 11:34 AM |
Try again: Is anybody running an algae scrubber as primary filter. | Frick-n-Frags | Reef Discussion | 166 | 08/03/2008 03:58 PM |