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Re: Dutch aquarium lighting
Lennart =?iso-8859-1?Q?Ed=E9n?= <le.e at privat_utfors.se> wrote:
> Hi Ivo,
>
> The "89" type is probably the Philips īTL`D/89 Aquarelle 10000K that is
> widely used in Europe. I use them myself and really like them. They
> somewhat compensate for the strong peat tint I have in my tanks. The
> 10000K rating is a bit confusing since they donīt look that blue to me.
> Colour rendition is excellent even though the CRI is only 89.
>
> Lennart
> Norrkoping Sweden
Indeed, Lennart, I double checked the Aquarelle PDF page at high magnification
and saw the "89" in there. I'm having problems in reading some PDF files
from the Philips European web catalog. Thanks for the info.
This weakens a little bit my argument: now 7 out of the 15 listed tanks use
some sort of blue light bulb. Still, it is typically one bulb in a set of 4
or more, all the others being very yellow.
Here is the revised table:
Volume Watts/gal Depth Quantity of bulbs and color type
(gal) (cm)
100 2.87 50 5 X 29, 830, 840
112 2.57 50 3 X 830, 1 X 840, 1 X 89
92 2.50 45 2 X Warm white, 1 X Grolux, 1 X daylight
110 2.28 50 82, 830
106 2.18 47 1 X 92 (?), 1 X 930, 1 X 940, 1 X 840
152 1.90 60 2 X 830, 2 X 840, 1 X Aquarele
198 1.75 48 6 X 92 (?)
172 1.67 50 8 X 830
132 1.62 55 2 X 92 (?), 2 X 940
90 1.60 50 1 X 89, 1 X 82, 1 x 830, 1 X 840
283 1.52 55 12 X 830, 840
124 1.45 60 4 X 830, 1 X 840
276 1.42 55 89, 930, 940
86 1.26 50 2 x Warm white, 1 X Aquarele
146 1.23 50 3 x 830, 1 X 827, 1 X 89
Color designations:
29 - 2,900 Kelvin, CRI 70 (halophosphor)
82 - Perhaps a shorthand for 827 ?
827 - 2,750 Kelvin, CRI > 80
830 - 3,000 Kelvin, CRI > 80
840 - 4,000 Kelvin, CRI > 80
89 - Aquarelle 10,000K, CRI 70
92 - Perhaps a 2,750 Kelvin, CRI > 90 ? Couldn't find it in Philips cat.
930 - 3,000 Kelvin, CRI > 90
940 - 4,000 Kelvin, CRI > 90
- Ivo Busko
Baltimore, MD