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Retirement and forum shutdown (17 Jan 2022)

Hi,

John Howell who has managed the forum for years is getting on and wishes to retire from the role of managing it.
Over the years, he has managed the forum through good days and bad days and he has always been fair.
He has managed to bring his passion for fish keeping to the forum and keep it going for so long.

I wish to thank John for his hard work in keeping the forum going.

With John wishing to "retire" from the role of managing the forum and the forum receiving very little traffic, I think we must agree that forum has come to a natural conclusion and it's time to put it to rest.

I am proposing that the forum be made read-only from March 2022 onwards and that no new users or content be created. The website is still registered for several more years, so the content will still be accessible but no new topics or replies will be allowed.

If there is interest from the ITFS or other fish keeping clubs, we may redirect traffic to them or to a Facebook group but will not actively manage it.

I'd like to thank everyone over the years who helped with forum, posted a reply, started a new topic, ask a question and helped a newbie in fish keeping. And thank you to the sponsors who helped us along the away. Hopefully it made the hobby stronger.

I'd especially like to thank John Howell and Valerie Rousseau for all of their contributions, without them the forum would have never been has successful.

Thank you
Darragh Sherwin

Daylight Energy saving lamps

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07 Jun 2007 07:46 #1 by apistodiscus (apistodiscus)
Daylight Energy saving lamps was created by apistodiscus (apistodiscus)
Hi,
has anybody tried Energy saving light bulbs? They used to be available only in 2000-4000k but are now available as in daylight (6500K).
Would save me a small fortune if they did the trick on planted tanks.

Holger

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07 Jun 2007 09:39 #2 by JohnH (John)

Energy saving light bulbs? They used to be available only in 2000-4000k but are now available as in daylight (6500K).


Holger,
I use the ordinary cheapo B&Q energy saving bulbs for just providing some illumination but have never come across the 6500 ones - they must be new to the market?

John

Location:
N. Tipp

We're just two lost souls swimming in a fish bowl - year after year.


ITFS member.



It's a long way to Tipperary.

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07 Jun 2007 09:47 #3 by apistodiscus (apistodiscus)
Replied by apistodiscus (apistodiscus) on topic Re: Daylight Energy saving lamps
Hi John,
they are pretty new. My old man's coming over today in he's bringing some with him. I have seen them on ebay but not in the shops yet. Back home they cost about 3.80€ each. I have posted the question on a few German forums and some people are already suing them with great effect.

Holger

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07 Jun 2007 10:14 #4 by zig (zig)
Depends on what you want to do with them I suppose, probably fine for a smaller setup, one problem they have is called "restrike" because the tubes are usually not linear in shape but more likely double tubes or twisted versions, which means they are less effective because all the light is not reflected into the tank and is lost through restrike.

I have never seen the smaller household cf bulbs in 6500k versions over here.

A good cheap option for T5s or T8s is tubes like these in the link below, unfortunately they do not deliver to Ireland, but you should be able to get them through larger wholesalers here, the Philip's brand probably give the best daylight rendition for viewing purposes, the others can be slightly warm in colour which some may not like.

ATM I'm using the Osram brand cheapie T5 tubes the same as in the link below ,work well.





www.lampspecs.co.uk/Light-Bulbs-Tubes/860-and-865-Daylight_11

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07 Jun 2007 10:21 #5 by apistodiscus (apistodiscus)
Replied by apistodiscus (apistodiscus) on topic Re: Daylight Energy saving lamps
Hi Zig,
not quite what I was talking about since I want to hang the lights over the tank that look similar to a HQI pendelum.

Here's what I am getting:

www.sylvania-lamps.com/catalog/switch.ph...ults&paramid=429

6500K and 950lm

Holger

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07 Jun 2007 10:47 #6 by zig (zig)
Not quite sure what you mean that link just brings up the main homepage, is the pendulum something like this, does it take more ordinary looking bulbous light bulbs/fittings, what wattage are they?

Sounds good anyway, most tubes in that 6500k ballpark will do fine, just some of the domestic ones can be warmer yellow.

The osram ones im using atm have a weird dull yellow cast from them, grow plants fine though, most of the store bought planted tubes have a green cast from them especially the T8s.



www.lichtarena.com/oxi/oxid.php/sid/x/sh...2972499/tpl/-/lang/1

Edit: oops that link is a bit long sorry about that

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07 Jun 2007 10:53 #7 by apistodiscus (apistodiscus)
Replied by apistodiscus (apistodiscus) on topic Re: Daylight Energy saving lamps
@zig,
what my link brings up is the product information on the bulb I'm getting not the fixture. Osram colour 865 is daylight at 6500k. It screws into any E27 fitting so you can use any pendulum that has this a E27 fitting.
They are 20W.
Holger

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07 Jun 2007 11:01 #8 by zig (zig)
Ok I see it now, lots of restrike with those ones.

Interesting thing about those bulbs is that the bottom bit is a ballast, when the bulb eventually blows or gets to dull you can remove it and use the ballast to power another T5 bulb.

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07 Jun 2007 11:12 #9 by apistodiscus (apistodiscus)
Replied by apistodiscus (apistodiscus) on topic Re: Daylight Energy saving lamps
at under 4 € a bulb and average of 6000 hours running time, never mind the effort to rewire it, I won't bother :D
What do you mean by 'restrike' and do you think they should work.

And I'm actually getting the 25W ones which apparantely produce as much light as a 110W light bulb

Holger

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07 Jun 2007 14:09 #10 by zig (zig)

at under 4 € a bulb and average of 6000 hours running time, never mind the effort to rewire it, I won't bother :D
What do you mean by 'restrike' and do you think they should work.

And I'm actually getting the 25W ones which apparantely produce as much light as a 110W light bulb

Holger


Holger, you get restrike because the bulb in your link is formed in a spiral shape, if you straightened out the same tube the output performance would be much better, linear shape tubes will perform best.

They should work fine though, they do have a tendency to hotspot though, the area directly beneath the tube will be lit best and then the light quickly tails off beside it, good reflectors will help there though.

You always ghetto the new spiral tube and run an ordinary linear 24W T5 from its ballast :P :lol:

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07 Jun 2007 14:34 #11 by apistodiscus (apistodiscus)
Replied by apistodiscus (apistodiscus) on topic Re: Daylight Energy saving lamps
Hi zig,
from what I can gather the spiral shaped bulb have a higher lumen number so the light will penetrate deeper into the tank. Will hook them up over the weekend and see if it works out. I haven't seen any straight bulbs with the 6500k
I just found 50 and 75W bulbs. They should make things interesting

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