The Planted Tank Forum - View Profile: Hoppy

Hoppy Hoppy is offline

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Showing Visitor Messages 31 to 40 of 193
  1. hitmanx
    03-31-2014 12:59 AM - permalink
    So are you still selling your meters? What's the cost? And do you ship to canada? Are there similar alternative? Lux meters maybe?
  2. Hoppy
    03-30-2014 02:55 AM - permalink
    hitmanx, you can just prop the light across a couple of chairs and measure the PAR out in the air, at the same distance that they would be from the substrate. That reading will be very close to what it is in the tank, in water. If anything it is a big lower than what you get in the water.
  3. Hoppy
    03-30-2014 02:54 AM - permalink
    My PAR meter sensors are all waterproof, to the extent that a quick trip into the water shouldn't harm them, but they can't be left in the water for more than a few seconds without some risk of leaks.
  4. hitmanx
    03-29-2014 04:17 PM - permalink
    Both the 8.5in and 10.5in domes completely surround the Philips 23w 6500k cfl I am using so all available light is being reflected down. Are your par meters water proof? Could place them directly into my existing tank? I guess this is the only way I will actually know what kind of light levels I am dealing with
  5. Hoppy
    03-29-2014 03:52 PM - permalink
    Yes, I did some testing with at 10.5 inch dome reflector. But, I have not compared the light output from the two sizes of reflectors. It isn't an easy thing to figure out, because the smaller dome doesn't completely surround the larger wattage CFL bulbs, making it capture less of the stray light. Intuitively, the 8.5 inch dome should give a higher PAR than the 10.5 inch one, for small CFL bulbs which don't extend out of the dome profile. But, when a bulb does extend out of the dome profile there is a big loss of light.
  6. hitmanx
    03-28-2014 11:58 PM - permalink
    Okay that makes sense. So wont the larger dome spread the par even thinner then? So at the same height and same bulb the 10.5 would give less light per unit area than the 8.5?

    Did you conduct the tests that led to your vertical cfl chart for a 10.5inch dome? According to that I would have a par of 90...
  7. Hoppy
    03-28-2014 10:29 PM - permalink
    The higher you raise the light the larger the circle of light gets, so the lower the light per unit area gets. PAR is light per unit area. If you want to be sure to have low enough light, just raise it 2 inches instead of one inch. Then, if you still have difficulties with BBA you can either dose Excel at 2X the recommended dosage - or 2 ml per 10 gallons every day - or you can raise it another 2 inches. Without a PAR meter you can only do this by trial and error.
  8. hitmanx
    03-28-2014 07:52 PM - permalink
    After 4weeks small tufts of BBA are starting to show up on dying leaves at the bottom of tank, dwarf sag, and on the anubias petite. I removed as much as I could and raise raise the light 1 inch.

    Now my question is will a 10.5 inch fixture just extend the lighting footprint outwards or does it alter the available par values enough to warrant raising the light? The 8.5in is giving a spotlight effect with plants growing up and inwards.

  9. Hoppy
    02-28-2014 11:00 PM - permalink
    The algae that you want to look for is black brush algae, BBA, which will be black tufts on non-growing leaves, and on hardscape. As soon as you see any, remove it, and raise the light an inch or so. Keep doing that until either you see none, or the rate at which you see it is easy to take care of.
  10. hitmanx
    02-28-2014 04:17 PM - permalink
    Okay thanks for your help! I'll start there and tweak the height... what kind of things should I be looking for that would tell me to raise it? How quickly can algae bloom? This will be first tank in about 20years, so I just don't remember

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02:04 AM - Audionut mentioned Hoppy in post Wrapping my head around KH and co2. Led light questions! Look!
... Minor correction Hoppy. That would be Bica...
12:39 AM - Audionut mentioned Hoppy in post CO2, pH, and dKH question observation from Hoppy. The last paragraph...
01:32 AM - burr740 mentioned Hoppy in post Lighting an Aquarium with PAR instead of Watts
...hat one was made by Hoppy (thanks again man, i...


01:19 AM - GrampsGrunge quoted Hoppy in post Question about water parameters
Water companies treat wate...
10:09 PM - Vidikron quoted Hoppy in post CO2 Test Kit
When I first started using...
08:42 PM - Complexity quoted Hoppy in post Can you ship a plant without it dying? Zip lock bag with water or other procedure?
I packaged identical group...
07:53 PM - MaroMan quoted Hoppy in post How to decide what level of lighting to have in a new tank?
...mpletely agree with Hoppy, it will depend on w...
07:47 PM - Teebo quoted Hoppy in post Phosphates Vs. Nitrates
Nope, the P in any form in...
07:20 PM - Hoppy quoted Teebo in post Phosphates Vs. Nitrates
Thanks for this! So plants...
06:40 PM - Hoppy quoted Edward in post How much c02 is too much?
Shouldn’t we be rather aski...
03:53 AM - Hoppy quoted stingrayness in post When do you add dechlorinator during water change
For the past decade I've always j...
04:36 PM - Zoomy quoted Hoppy in post Community Tank Ideas For Elderly?
For a 10 gallon tank, cons...
04:43 PM - Hoppy quoted Complexity in post Can you ship a plant without it dying? Zip lock bag with water or other procedure?
Somewhat damp, yes. Saturated, ...
11:02 PM - wmnash quoted Hoppy in post overheard at the fish store...
No, I wouldn't, and not al...
07:26 PM - Hoppy quoted Malin in post Lighting an Aquarium with PAR instead of Watts
Did anyone ever check out ...
03:47 PM - Hoppy quoted Delapool in post Another CO2 system?
Was curious on what's in it? ...
07:08 PM - end3r.P quoted Hoppy in post The Scoop on CO2 Boosters
When API did their demonst...
02:44 PM - Greggz quoted Hoppy in post Problem making Nitrate Reference Solution
... aquarium stuff. Hoppy I got this figured o...
02:04 PM - Hoppy quoted touch of sky in post The Scoop on CO2 Boosters
I have used both Excel and Metric...
05:47 PM - Hoppy quoted Diana in post South American Fish In 8 PH Soft Water
The water company adds sod...
11:04 PM - Limejoker quoted Hoppy in post Introduction and first tank!
You may have too much ligh...
05:34 PM - Hoppy quoted Brian727 in post Help with BBA/poor plant growth
I have recently done an algae...
05:27 PM - Hoppy quoted tanksalot in post BBA w/ press. CO2 tank
Brian727: Thanks, but I'd like...

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