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Search: Keyword(s): ; Posts Made By: jeffkrol
Forum: Lighting 08-31-2015, 10:50 PM
Replies: 15
Views: 522
Posted By jeffkrol
No, it happens w/ 2 different systems.. Same...

No, it happens w/ 2 different systems.. Same results.. Quick search of the "parent" website doesn't show that page either..

yours could just be cached.. but it is still an oddity..
Forum: Lighting 08-31-2015, 01:30 PM
Replies: 9
Views: 262
Posted By jeffkrol
Are you referring to a battery backup for the...

Are you referring to a battery backup for the lights or just the controller?

Some controllers have a built in backup battery just for them. Keeps the real time clock on time.. ;)
Forum: Lighting 08-31-2015, 01:57 AM
Replies: 15
Views: 522
Posted By jeffkrol
Yes.. It redirects to this: ...

Yes.. It redirects to this:
http://www.qksrv.net/media/offers/?utm_source=cj&utm_medium=cpa&utm_campaign=6147090

Typing it in manually in the address bar works though.....
Forum: Lighting 08-28-2015, 06:38 PM
Replies: 15
Views: 522
Posted By jeffkrol
How high off the top of the tanks are you going...

How high off the top of the tanks are you going to put it.

https://www.reefbreeders.com/shop/photon-32/
Forum: Lighting 08-28-2015, 06:33 PM
Replies: 1
Views: 97
Posted By jeffkrol
any 12v 3A switching power supply will work. ...

any 12v 3A switching power supply will work.

Plug really isn't an issue. Just cut plug/cord off dead one..

just one of many..
...
Forum: Fertilizers and Water Parameters 08-27-2015, 10:00 PM
Replies: 29
Views: 647
Posted By jeffkrol
Sorry, nothing to really add but I thought it was...

Sorry, nothing to really add but I thought it was a nice little "paper" on hardness ect..
http://dnr.wi.gov/regulations/labcert/documents/training/basics-genchem.pdf
Forum: Lighting 08-26-2015, 11:04 PM
Replies: 4
Views: 250
Posted By jeffkrol
I see nothing concrete about Dustins.. Lots of...

I see nothing concrete about Dustins.. Lots of fluff but little meat.
I can say they are running constant voltage though.. and no "automation" but a manual dimmer. Should be easy to hack in a...
Forum: Fertilizers and Water Parameters 08-26-2015, 09:14 PM
Replies: 29
Views: 647
Posted By jeffkrol
Throw in a hundred or so guppies... pH will come...

Throw in a hundred or so guppies... pH will come down.. ;)
anyways joking aside:

http://www.aquariumadvice.com/forums/f12/ph-wont-go-down-119631-2.html
Forum: Lighting 08-26-2015, 05:30 PM
Replies: 4
Views: 217
Posted By jeffkrol
Yes from the plants perspective it may not make...

Yes from the plants perspective it may not make much of a difference.
Gross photons is all that matters for the most part. Specific wavelengths make subtle differences but plants adapt their...
Forum: Lighting 08-26-2015, 01:08 AM
Replies: 4
Views: 217
Posted By jeffkrol
Well the color temp will depend more on the look...

Well the color temp will depend more on the look of the tank to you..
The 4000k is "generally" warmer looking while the 6000k is slightly bluer looking..
This is a bit more pronounced w/ LED's than...
Forum: Lighting 08-25-2015, 08:51 PM
Replies: 3
Views: 346
Posted By jeffkrol
fluval uses low K whites as well as high k. I...

fluval uses low K whites as well as high k. I really like their concepts..

But until I see this and what it does:


I'm not recommending it against a 24/7
Forum: Lighting 08-25-2015, 01:58 AM
Replies: 9
Views: 188
Posted By jeffkrol
Most likely a power supply failure.. any "same...

Most likely a power supply failure.. any "same voltage" switching power supply will work if amps are the same or more. Actually more than likely lower amp will "work" as a test as well as long as it...
Forum: Lighting 08-24-2015, 09:05 PM
Replies: 4
Views: 172
Posted By jeffkrol
http://www.aquatraders.com/LED-Clip-On-Aquarium-Li...

http://www.aquatraders.com/LED-Clip-On-Aquarium-Light-1W-Freshwater-Plant-p/56411p.htm

not sue how thy fit on a rimmed tank (Had some problems w/ Finnex clip-ons in this regard)

There are more...
Forum: Lighting 08-22-2015, 03:01 PM
Replies: 4
Views: 172
Posted By jeffkrol
The quantity of light between the MH and a 24/7...

The quantity of light between the MH and a 24/7 (or even more than one) is HUGE..
Forum: Lighting 08-19-2015, 08:18 PM
Replies: 4
Views: 309
Posted By jeffkrol
As good as any. just monitor growth.. I assume...

As good as any. just monitor growth.. I assume you can do channels separately so it will be a bit fun to play w/ it.
...
Forum: DIY 08-17-2015, 07:13 PM
Replies: 19
Views: 593
Posted By jeffkrol
As above and you can also cover the cut area w/...

As above and you can also cover the cut area w/ masking tape...That will prevent some chipping..

Punching a starter hole will help as well..

Drilling from both sides can be a bit problematic if...
Forum: Lighting 08-17-2015, 04:50 PM
Replies: 8
Views: 239
Posted By jeffkrol
I wouldn't go that far BUT it certainly would be...

I wouldn't go that far BUT it certainly would be a bit bluer than my personal preference.



http://www.buildmyled.com/fish-focus-blue-13000k-xb-series/

...
Forum: Lighting 08-14-2015, 09:36 PM
Replies: 26
Views: 632
Posted By jeffkrol
Yes I saw that. cool stuff but still quite young..

Yes I saw that. cool stuff but still quite young..
Forum: Lighting 08-14-2015, 05:14 AM
Replies: 8
Views: 289
Posted By jeffkrol
Try topdogsellers on "the bay" for anything...

Try topdogsellers on "the bay" for anything beamswork
Faster shipping more than likely, though I am not aware of aquatraders being too slow.
YMMV
As to color 6500k LEDs are a bit short on red....
Forum: Equipment 08-13-2015, 10:38 PM
Replies: 6
Views: 367
Posted By jeffkrol
As you can tell there are 4 in series.. if...

As you can tell there are 4 in series..

if you ca nget to the pads it is easy to figure out which re the "failed open" ones..

De-soldering and re-soldering is not that easy but doable w/ a...
Forum: Lighting 08-13-2015, 07:03 PM
Replies: 8
Views: 289
Posted By jeffkrol
t8's are as efficient as t5's t5HO but of course...

t8's are as efficient as t5's t5HO but of course at a lower gross wattage.
point is for t5 or t8 it is just a matter of output..
2 25W t8's are equiv. to 1 50W t5HO but in a bigger package of...
Forum: Lighting 08-13-2015, 06:42 PM
Replies: 26
Views: 632
Posted By jeffkrol
I could think of a few dozen reasons they are not...

I could think of a few dozen reasons they are not "mainstream" yet but most is economics and a "good enough" mentality..

I requested the software.. I'll see what happens..


I do have some...
Forum: Lighting 08-13-2015, 05:18 PM
Replies: 26
Views: 632
Posted By jeffkrol
your call Advantages: adds color separation...

your call
Advantages:
adds color separation to blue greens
somewhat hits a carotenoid absorption peak
Increases "full spectrum" percent
disadvantages:
Very visible color to the eye
no real...
Forum: Lighting 08-13-2015, 01:12 PM
Replies: 7
Views: 229
Posted By jeffkrol
Just stick a big wattage PWM dimmer between the...

Just stick a big wattage PWM dimmer between the ps and the fixture..

...
Forum: Lighting 08-13-2015, 02:20 AM
Replies: 26
Views: 632
Posted By jeffkrol
http://image.dhgate.com/0x0s/f2-albu-g2-M00-FB-81-...

http://image.dhgate.com/0x0s/f2-albu-g2-M00-FB-81-rBVaGlSfiuGABxJBAAC1Qjx1j1U164.jpg/4pcb-lot-full-spectrum-led-grow-lights-cob.jpg

Well there really are a lot of "holes". but 460 isn't really one...
Showing results 1 to 25 of 250

 
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