I don't know any details Ray, or even if it's true that a slimline T5
generates less heat than the equivalent T8 or not-just what I had heard to
be the case & I've seen no evidence to refute or confirm this so perhaps
someone can set the record straight.
Another thing for the beginner to consider with these tube lighting is the
luminosity of them can degrade over time so they are not supplying the full
spectrum needs of the plant. I notice this quite dramatically every April
when I replace my T5s. I have 2 free standing rigs on my tank side by side
& when I replace one set the other with the old tubes in is noticeably
darker & casts less light into the tank than then the new set. My total
depth of water is only 19".
John*<o)))<*
On 5 July 2013 13:19, <sevenspringss1@aol.com> wrote:
> **
>
>
> Hi Dawn,
>
> Yes, these screw-in fluorescent bulbs are a type of compact fluorescents
> (CFL's). They're the latest in energy saving innovations made to replace
> the normal incandescent bulbs in household ceiling fixtures and lamps,
> etc.
> A CFL bulb producing the equivilent amount of light of a 60 Watt
> incandescent bulb uses only 13 Watts though, so it doesn't produce the
> amount of heat
> you're probably thinking of. It's advertised to use 75% less energy than
> "ordinary" bulbs. It does still get hot though, but unlike an incandescent
> bulb with which you'd get burned if you tried to touch it while it's
> working, you can actually hold one of these smaller wattage CFL bulbs
> while it's
> working without risk of being burned.
>
> Still, I agree with you that to avoid unnecessary heat (especially in the
> Summer), that a hobbyist would be better off using a T8 fluorescent bulb
> --
> for a smaller (shallower) tank -- and probably a T5 for the deeper tank
> for
> normal aquarium illumination. I don't know if one produces much more heat
> than the other, as John is suggesting, although just one 18" (18 W) T8
> tube for a 10 gallon tank is often not enough light for growing
> medium-light
> requiring plants like Amazon Swords. When dealing with fluorescent bulbs,
> the lumens really need to be considered rather that the wattage -- in
> addition to the "temperature" (Kelvin) for the plants' needs -- and I
> don't know
> what 18 Watts of fluorescent lighting equates to in lumens. I wouldn't
> think though, the difference in heat produced by these two tubes wouldn't
> be
> all that great, unless John has cause to explain differently, but either
> one
> has to be so much better in reducing heat than an incandescent, and still
> better than a CFL.
>
> Ray
>
>
> In a message dated 7/5/2013 5:44:56 A.M. Eastern Standard Time,
> dawnshungryeyes4u2c@yahoo.com writes:
>
> One thing I would like to point out here is that the depth of the tank has
> a lot to do with choice of "proper" lighting needs regardless of what
> animals/plants you are keeping. This being a 10 gallon tank which is
> shallow,
> T5 lighting would be quite strong for such a small tank, so be careful not
> to
> over light the tank. Not only will too much lighting contribute to algae
> growth but it can also affect animals in saltwater situations and plant
> growth in freshwater situations.
>
> Not knowing what you are keeping in this tank, I am still going to suggest
> standard fluorescent lighting to you simply due to the depth of your tank.
> For freshwater, standard T8 fluorescent lighting is strong enough to grow
> Amazon swords, which is a plant that requires high light, and is also
> strong enough for saltwater to grow anything but things such as some of
> the SPS
> corals that require very high lighting.
>
> Because T8 is sufficient to grow almost anything in that size of a tank,
> jumping up to T5 lighting would be overkill in my opinion, and would
> likely
> cause more harm than good as an end result. Standard T8 lighting can work
> well over any type of cover and will fight right over the standard deluxe
> hood the same way the incandescent fixture does now.
>
> The "screw in fluorescent" bulbs that I heard mentioned in this thread are
> something else I have to question. This sounds like compact fluorescent
> bulbs to me, and that is another I would avoid because CF lighting can put
> out a great deal of heat as well... much more so than incandescent. For
> that
> reason I would avoid those since that would simply add to your current
> problem rather than resolve it, and has the potential to melt the plastic
> of
> your deluxe hood/cover that you are currently using. There are some
> situations where CF lighting can work great... but over a 10 gallon
> tank... not so
> much.
>
> Also to clarify the info I posted earlier about the quality of LED
> fixtures... there are a few on the market that are excellent, but the cost
> for
> them would make no sense if standard fluorescent will resolve your problem
> and
> suit your needs. You would be talking about a difference of anywhere from
> $50 - $100 for a good quality LED fixture vs standard fluorescent T8
> lighting to get the same results. Unless you are keeping something such as
> special SPS corals in a saltwater situation, I don't see that as being
> worth the
> extra expense, thus my recommendation to not bother with the LED for this
> tank. It simply wouldn't be worth it. T8 doesn't give off excessive
> amounts
> of heat such as the incandescent or CF bulbs would, and should be plenty
> to
> fix your problem without raiding your pocketbook.
>
> Dawn
>
> --- In _AquaticLife@yahoogroups.com_ (mailto:AquaticLife@yahoogroups.com)
> ,
> "rachell7" <rachell7@...> wrote:
> >
> > What do you use for lighting in your tank? My 10 gallon still has the
> original hood with incandescent light blubs which need replacing far more
> often then I like and do contribute to heating my tank, great in the
> winter
> but not so great in the summer when it's 112 outside! But with summer
> here,
> to keep the heat down, I borrowed the hood from a friend's empty 20 gallon
> tank that has florescent lights and I like it. So now I am thinking about
> changing to either the florescent or LED. Give me your opinion please! I
> believe Dawn you said you use the LEDs when I commented on your photos?
> > Rachell
> >
>
> [Non-text portions of this message have been removed]
>
>
>
[Non-text portions of this message have been removed]
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