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Re: [APD] Welcome to the "Aquatic-Plants" mailing list (Digest mode)
Wise comments, but I will eleaborate a bit more.:
"Watts per gallon" is a technique for estimating lighting levels. You take the reated watts of the bulbs over an aquarium and divide by the nominal volume of hte tank. The estimated watts-per-gallon that you compute this way allows you to work towards a target level of lighting. What's the target? There are diff ones depending on goals, plants, conditons, variations in equipment and gardening techniques. But these rules of thumb will serve just abut everyone well.
2 -3 wpg for a tank with added CO2.
1.5-2 for tanks without added CO2
3 - 5 wpg for very fast tanks with plenty of CO2 and diligient upkeep.
More than that, and you're out there with very little company but not entirely alone. But you won't have time to notice anyone else, you'll be too busy with tank maintenance. ;-)
These are rules of thumb. Fine tune as you go based on your results and experience.
good luck, good fun,
Scott H.
* * * * * * * * * * * It's new; it's fun; it's the New England Aquatic Plant Society NEAPS, is a newly formed organization interested in aquarium flora and fauna. http://www.ne-aquaticplants.com/
----- Original Message ----
From: "Wise, Nicholas" <Nicholas_Wise at eon-us.com>
To: aquatic plants digest <aquatic-plants at actwin_com>
Sent: Friday, January 27, 2006 10:27:38 AM
Subject: Re: [APD] Welcome to the "Aquatic-Plants" mailing list (Digest mode)
> Hi,
>
> I would like to know what is the best indicator for
> insufficient lighting? I have 300gal newly setup tank and I
> have 2 150 watts Metal Halide and I have some plants that are
> still dying. The plants that are dying are with red leaves.
> Some of the plants, e.g. Micranthemum umbrosum,have very nice
> roots but they are not growing very well, never grew an inch.
> I have Co2 injection and almost all the plants will produce
> bubbles. With this kind of situation, do I need to add a 150
> watts of MH?
>
> Thanks,
>
> Edison
300 W over a 300 gal tank seems too low for me. The generic rule is the
watts per gallon. I would stick with at least 2 watts per gallon of
tank. Obviously there are many exceptions and variations of this as I'm
sure many people will point out.
-Nick
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