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Post by BriMc on Oct 18, 2014 17:48:15 GMT -5
With a 10 or 12k Bulb I would definitely go with a blue but seeing that the MH is going to give you your UV I would look for Lamps in the 15k to 22k spectrum not in an Actinic rating. The added U.V. won't hurt but the less U.V. you are exposed to the better. ATI Blue plus is a good choice.
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Post by industry on Oct 18, 2014 20:00:38 GMT -5
I'll have to do some more research on the UV aspect. Aren't most of the Led guys trying to Add UV? Thanks for the info.
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Post by jasonandsarah on Oct 18, 2014 20:38:46 GMT -5
I'll have to do some more research on the UV aspect. Aren't most of the Led guys trying to Add UV? Thanks for the info. That's because most cheap led's have a couple violet led's and no Uv semi led's. So people want to add some Uv. A little uv can promote growth and make things stronger. To much can burn things and be detrimental. True actinic has a very large and wide spike in the 420nm-450nm I THINK what brimc is trying to say is since your Mh already has uv so you could go with a bulb with blue still but less because from the charts I posted they all have some Uv Blue plus/Purple plus..... Sent from my SM-N900R4 using proboards |
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Post by BriMc on Oct 18, 2014 22:05:44 GMT -5
Jason is correct and he hits on another confusing but fact about lighting, you can have a light that is in the blue spectrum Temperature range as an actinic lamp but not have any UV and still be rated as a 420nm lamp. As Jason Stated with LED's the blue gets you into the color or "Temperature" rating but no U.V.
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Post by industry on Oct 19, 2014 6:51:43 GMT -5
So maybe a pair of blue plus bulbs then? I like the color of the tank now, with maybe a touch more blue. Purple seems like too much maybe? Trial and error is expensive. Lol
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Post by jasonandsarah on Oct 19, 2014 8:44:59 GMT -5
So maybe a pair of blue plus bulbs then? I like the color of the tank now, with maybe a touch more blue. Purple seems like too much maybe? Trial and error is expensive. Lol If you want your tank on the blue side then blue plus/blue plus is the bulbs for you. As Mh bulbs age do they start to loose they're uv properties? Only asking because I was wondering if down the Rd when the Mh bulb got old I wondered if switching to a true actinic would be beneficial? Just a thought.... Sent from my SM-N900R4 using proboards |
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Post by gotareef on Oct 19, 2014 9:08:41 GMT -5
I'll have to do some more research on the UV aspect. Aren't most of the Led guys trying to Add UV? Thanks for the info. this is the confusing part, imo- you have mh you do not want to add any more true uv. the reason mh bulbs have 2 layers of glass is to try to block the uv. not to mention then you add another layer on the fixture to block even more of the true uv... true uv damages tissue in plants and animals, the reason it gives you a sunburn... but on the other side this damage and repair process in the tissue will make it stronger and more resistant. to much uv and your fish will be blind (fish see in green) |
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Post by BriMc on Oct 19, 2014 10:29:05 GMT -5
This is a random guess but I think it falls under a little is good and too much is devastating. I am wondering if with a little UV corals do become resilient and grow a lot better. When you cross the line of too much UV the corals burn and only the hardiest come back and survive. I have never run MH bulbs without the shields in place. Back in the day when different MH bulb colors were coming out SeaWorld in Salem NH had a 125 set up with 3 different color SE 175w HM's to show the color differences, these were run with a home made reflector and no shields in place and the tank was beautiful with no losses. From experience and running my own tests DE Bulbs do put out more UV then SE Bulbs. Giving an idea of too little or too much UV while manufacturing a run of photo display lamps which have no UV we had a spectrum shift. It was very slight almost unnoticeable but put the Lamps in the UV range. After an hour of running the operators were complaining about being itchy. This ended up causing 5 employees heading to the hospital for sun burning, When we ran test on samples pulled from the line the UV being produced was barely detectable in the UVA or UVB scale.
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Post by industry on Nov 14, 2014 11:41:26 GMT -5
I wonder how an ATI blue and a fiji pink would look?
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Post by BriMc on Nov 14, 2014 12:34:01 GMT -5
Giesemann makes a good lamp also.
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