Survey for "Updating the WPG rule (theory)"

[czcz]

Please post the following. Let's use what you can grow and your judgement for whether it is a low-very high light tank. With this in mind, past lighting set-ups are still usefull if you feel confident about the lighting level. If you happen to have >4" substrate or something weird please note it.

Tank volume
Tank dimensions LxDxH
Watts (please break down by lighting type - T12, T8, CF, spiral screw-in CF, etc)
Lighting level (low-very high light)
Notes

Here is an Excel spreadsheet that does Ozz's current article calcs for your for you (lumens/watt for each bulb can be changed in the bulbs book as necessary).

This will help in playing with formulas by using real-life tanks. Please leave this thread as data only and discuss here: http://www.aquariumadvice.com/viewtopic.php?t=72491 Thank you.

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8gal
24x6.5x12
2x13w CF
med-high

8gal
24x6.5x12
2x13w CF + 20w T12 + 23w spiral screw-in CF
very high
note: 23w spiral CF is on the side with a shade... ~5w usable light?

10gal
20x10x12
2x23w spiral screw-in CF
medium

10gal
20x10x12
18w CF + 15w T8 + 32w spiral screw-in CF
med-high
note: 32w spiral CF is over the top in a gap, only effectively lights 1/3rd of the tank

10gal
20x10x12
23w spiral screw-in CF
low

20gal
30x12x12
2x15w T12
low

[rich311k]

36gal
30 x 12 x 18
2 x 65w CF
high - very high

Notes: It is a bow front width goes from 11 to 14 in the center. I have not put a plant in yet that didn't grow. Haven't tried anything difficult but I have put in high light plants and they grow well without losing any leaves at the bottom.

[Purrbox]

5 Gallon Hex
6.25 x 12 (length of a side x height)
10 Watt self ballasted screw-in CF
Low - Med
Notes: Found the area calculation for a hex is =((3*SQRT(3))/2)*(length of a side)^2, which makes it about 101.5 square inches for this 5 Gallon Hex.

2.5 Gallon Standard
12 x 6 x 8
2 x 13 Watt CF
High - Very High

[BlazerFRS]

6gal Bowfront (eclipse system 6)
16.70 inches x 14.30 inches x 13.10 inches
8 watt T5
Low- Grew Java Moss, Java fern, hornwart died

10gal Std
2112
26W CF
Med+ -Grow rotala, L. Repens, Dwarf sag. Cabomba dies on bottom, Pygmy Chain sword hangs on, but doesn't spread

[gfink]

10 gal
30W NO
Medium

29 gal
36 W NO
Low

[Jchillin]

75 gal
110w CF
48x21x18
Low

[fish_4_all]

Before: growth very good to begin, plants die or suffer after a month. Lower stems would melt and leaves would fall off, java moss grew very, VERY slow. Anacharis only grew well when floating.
2, 10 gallon
15 watt NO on each
Very low

Now: Will update post with growth observation in the future
2, 10 gallon
1 40 watt GE daylight NO
1 40 watt GE plant/aquarium light NO
even over top of both tanks
Medium light

[CGGorman]

70 gal bowfront corner (Dimensions are tough!)
48"w X 22"d x 25"h
2x 96W CF 36" in an Orbit fixture (pretty good reflector, but not GREAT)
I would call it medium-high.

At 25", this is a pretty deep tank. The light directly above the large branches of my driftwood casts poorly defined shadows. You can see the shadow area, but there is no sharply defined shadow boundary.

This is a young tank, but I've got Anubias Barteri v. Coffeefolia in the shade, watersprite (Ceratopteris Thalictroides) along the back wall, Red Tiger Lotus (Nymphaea Zenkeri) up front and a few stalks of Anacharis. All are growing like weeds.

[Wizzard~Of~Ozz]

75Gal
48x18x21
2 x 32w T8 ODNO 2x (96w T8 Equiv)
2 x 40w T12
1 x 32w T8

High light

Haven't had a problem growing anything including Rotala Nanjenshan (needle leaved), Rotala Magenta grows well. Macranda is not growing all that great.

Horrible reflector (will be building one and documenting it)

[quadrider5953]

Originally Posted by fish_4_all

Before: growth very good to begin, plants die or suffer after a month. Lower stems would melt and leaves would fall off, java moss grew very, VERY slow. Anacharis only grew well when floating.
2, 10 gallon
15 watt NO on each
Very low

Now: Will update post with growth observation in the future
2, 10 gallon
1 40 watt GE daylight NO
1 40 watt GE plant/aquarium light NO
even over top of both tanks
Medium light

fish4all, are you going to use a 4ft shop light, because i was planning to do the same over my 2 10 gallons (1 going to be put to use).

for my curernt tank

10 gallon standard
20x10x12
28 watts spiral screw in cf or 2.8 wpg
medium-low high light

mot medium high, not low high, right in the middle