[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[APD] Re: Thanks Scott!
Thanks Scott, for your informative and helpful reply
to my post. I'm looking around now to see if I can
snag some lighting to replace my 3 20watt fixtures.
Your help and advice is really appreciated.
Date: Mon, 16 Aug 2004 17:50:15 -0700 (PDT)
From: "S. Hieber" <shieber at yahoo_com>
Subject: Re: [APD] Which compact flourescent?
To: aquatic plants digest <aquatic-plants at actwin_com>
--- NYCMags <heavensabvus1 at yahoo_com> wrote:
> Hello all-
> Have decided to bite the bullet and get a compact
> flourescent for my new 65 gallon tank. I'd like to
> grow stuff like glosso and riccia so I'm guessing at
> watts per gallon. However, the tank is 24" from top
> to bottom, so perhaps I need more?
Hmmm. More compared to what? An 18" tank. You probably
won't notice the diff. Bulb and plant placement will
proably have more effect on glosso illlumination than
for, say, 3.5 versus 3 watts.
> Scanning ebay, I see different configurations but
> seem to come with 10,000k and actinic and some with
> moon lights. If you buy one of these fixtures, are
> the bulbs interchangeable with others (given the
> straight or square pin configuration)? I'm figuring
> need all 6700 daylight bulbs with maybe one 10,000k
Actinics are for reefs. Water absorbs the shorter
wavelength so down in the reef water, there's a lot of
light. Actinincs are meant to help "replicate" that
condition in an aquarium. But for freeshwater plants,
actinics are not so hot. It's not the spectrum that's
useful, it is, but the amount of output in the useful
range, being restrcited to the deep blue range, is
relatively low. You'll get more bang for the buck with
5,000K to 10,000K. Anywhere in there and your plants
Your plants aren't likely to care which of those you
but the appearance to your eye will be diff. So choose
based on whether you want light that is more toward
bluish or towards the reddish or yellowish end of the
spectrum. As a rule, the higher the temp rating, the
bluish. But it can veary somewhat depending on what
of the spectrum any given bulbs produces.
> Any reason to have legs to lift the light off of the
> tank? I would think that that could be annoying if
> you are sitting in a chair nearby -- to have
> shining at you.
If your lamp/hood/reffelctor doesn't spread light
raising it can help. If you want plants to grow out of
tank, it helps to raise the lamp out of the way.
it's mainly a method of increasing glare in the room,
as you suspect.
> How do I accomplish the right amount of watts given
> the configurations available. Two different strips
> one strong one? Tank is 36" long, 18" front to
> 24" top to bottom.
The amount of watts isn't some exact target that you
to achieve. You can grow plants with less than 2 and
than 4. And, of course, the array makes a diff as far
having dimmer spots in the aquarium. Some folks like
have very even light throughout the tank. Others,
mind the shady places. Think about what might look
your eyes. Pick the lighting level you're after, the
yo want, then think about whether you'd prefer one or
> I'm looking for the most effective, best value (cost
> is important). I currently have 1 65 watt power
> compact, and 3 20 watt strip lights. The more I
> the more I am confused. I'll be using DIY Co2,
> Flourite and TMG. My light is my weak link.
You probably have a very manageable set up with what
got. More light will speed things up and you'll need
ferts and more maintenance. That can be fun. But don't
over it. If it's starting to give you a headache, then
up and take a breath. There's lots of room to move --
margin of error -- flexibility of plants. Light is one
the easier things to adjust -- not like substrate or
An economical way to go is to make your own light
of inexpensive plywood and drop in a kit or two from
AHSupply.com. AHS even has some info on its website,
recall, for building your own box. Take a look at the
website and give them a call if you're interested.
give you good advice too and won't try to sell you all
lights your wallet can handle. You can probably fit a
of 96 watters over your tank and get all the light
need or want for most situations.
A milder step up would be to keep your 65 and add 1
bulb in place of the 3 20watt bulbs. If later you
you're comfortable with that level of light and have a
desire to make your tank grow faster -- or insist on
especially tempermental, light hungry plants, then
the 65watt bulb for a 96 watt bulb and run 2
you trade an AHS 96 watt kit for the 3 20watt bulbs,
electroic ballast and AHS reflectors will give more of
increase in light than merely counting the watts would
Good luck, have fun.
Do you Yahoo!?
New and Improved Yahoo! Mail - Send 10MB messages!
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com