|02-24-2014 07:37 PM|
|KenP||The reason i questioned this is the note on the graph indicates "desk" reflector. My desk reflector is white painted metal while the reflector for the cfl is mirrored trapezoid shape. The w or m shaped you mentioned i have seen for hps reflectors. My PL Systems hps lights have a m/w reflector.|
|02-24-2014 06:54 PM|
|02-24-2014 06:31 PM|
|KenP||Hoppy a question. If a cfl is used with a good reflector in the horizontal position would the par be equivalent to to vertical with a 10 " reflector?|
|02-24-2014 05:00 PM|
|02-24-2014 02:21 PM|
There is another thread here that suggests spiral bulbs provide more PAR in a vertical position than a horizontal position. I simply wondered if the tubes were straight, might they produce better PAR in a horizontal position?
The thread I'm referring to is here:
|02-20-2014 06:32 PM|
|02-20-2014 03:53 PM|
99% of all pictures you insert this way, the link ends with .jpg or some other image extension - just fyi. If it doesn't, you grabbed the wrong link.
|02-20-2014 03:38 PM|
|Hoppy||The reason the photo didn't show up is that you had [IMG]....[IMG] instead of [IMG]...[/IMG]|
|02-20-2014 12:25 PM|
Just put [IMG]"imageURL"[/IMG] and it should become an embedded pic...
EDIT, it didn't work on your link. You have to right click the image you want, go to properties and copy the picture url when you want to embed it into your post. I can't access that website at work for some reason, so try doing what I suggested to get the image URL, then put it between [IMG] [/IMG]
If you're using Chrome, its as easy as right click, copy image URL.
|02-20-2014 01:13 AM|
So, I'm wondering if the screw in Quad Tube design might offer better PAR than a spiral tube in a horizontal position. Great thread!
As I don't know how to insert a photo, here is a link to what I'm talking about:
Another attempt at pasting an image:
|12-06-2013 12:16 AM|
just a little feedback... I used the basic information presented in this thread to decide on my lighting for my 10 gallon work tank...
I'm running (1) 13W spiral CFL bulb and (1) 18W spiral CFL bulb in my stock hood (horizontally mounted, with aluminum foil glued on the inside of the hood to make it reflective). Running no CO2 (although I have been dosing a cap full of flourish excel once a week), currently lightly stocked and running for about 6 weeks or so since I planted it. Lights are on a timer to come on from 7am - 12pm then off for an hour (lunch time) then back on from 1pm - 4pm. Substrate is miracle grow capped with gravel capped with Tahitian moon sand (didn't like the brown gravel look after I made a mess planting)
I have DHG, HC, dwarf onion, vals, and a couple others that I can't remember the name of... the vals just melted (original leaves), but has new healthy growth and good roots growing on a couple plants that I can see the root growth from the side of the tank under the substrate.
Here are a couple pictures to show the growth...
first pic 10/22 just a day or so after planting, second pic was 12/3... the DHG is spreading nicely and starting to fill in. The HC I accidently siphoned some up which has been floating (trying to grow roots that I can replant it), but from what is still planted I don't think it has really spread, but it looks much healthier than it was in the first picture (it had been in my 55 for a couple months before transplanting in to this tank). I think it might be slowly spreading, it is on the side of the tank with the 18W bulb.
Nothing huge, but still pretty nice growth I think for a low tech tank (only my 2nd attempt at planting a tank, and its doing better than my 55 that I planted first).
|12-05-2013 03:11 PM|
low - 20-35 PAR
medium - 40-60 PAR
high - above 60 PAR
too high - above 90-100 PAR
I may change my mind next week, next month, etc.
|12-05-2013 05:26 AM|
This has been sooooo helpful. Thanks to all who put the time in to help newbies like myself have much better chances of success. My tank journal will credit this thread. I am building a rising fixture for my shop lights tomorrow!
I didn't realize it would ressurect this thread to the top of these forums and bump others down, sorry heh.
|11-25-2013 05:07 AM|
Values between 10-30 are considered low light.
Values between 30-80 are considered medium light.
Values between 80-120 are considered high light.
|10-30-2013 04:12 PM|
I think you're OK, the lighting will be slightly different with the U shape vs. the spiral shape I would guess, but should be fairly close I would think. This isn't an exact science, so the best we can do is get a good estimate unless you spend the money to get your own PAR data to run the tests on your specific set up.
I'm running a similar split, I have a 13W spiral CFL in my left and an 18W spiral CFL in my right (because I originally bought 2 of each and had the 18W's in but one of the 18W bulbs burned out within a day, must have been a bad light...) so I'm running 31W total vs. your 30W.
I am getting some pretty rapid algae growth though, so I might back down to two 13W bulbs because my tank is still cycling so can't add anything to help with the algae yet...
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