Quote:
Originally posted by DJ88:
Steve,
They peak at 470nm. not 450. That puts them in the violet range not blue.
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<font size="2" face="Verdana, Helvetica, sans-serif">Darren, Violet is from ~380nm to ~430nm blue is from ~440nm to ~500nm so if it peeks at 470 it is in the dead middle of BLUE country [img]smile.gif[/img]
No problem it was just a suggestion, if you want real blue then J&L has what they call actinic PC's (really 7100 blue PC's) for cheep. If you want violet you have to order from the US pretty much, unless of course J&L is carrying the others now.
Adam, you confuse me sometimes. You will still have your "shimmer" because you have your MH, the PC will not get rid of it. We are talking supplement lighting here... not primary lighting.
The article said that the Iwasaki bulb was lacking in "blue" and could use some supplement blue lighting.
I am going to go aside for a sec here and if people want to flame me go ahead (I have my fire proof undies on [img]smile.gif[/img] ) if you look at the sun itself it is a point source, but by the time the light gets to us it is not focused anymore, it is greatly diffused and diminished to the point that it acts as a diffused lighting. The shimmers are not caused by light rays from the sun but rather from intense light being reflected off ripples and particles in the water.
what was my point, my point is that even a florescent source (if intense enough) can create this same effect, Victor reported seeing it off over driven NO's, I have seen it on tanks being driven by a bunch of PC's and I have seen it on tanks with MH bulbs,
BUT I have not seen it in every tank that has a MH bulb, intact some tanks I have seen that have had the "shimmer" did not have it at other times. Other MH tanks I have seen had no "shimmer" what so ever... so there is no way that you can tell me that by adding a MH you are going to have "shimmer”... I don't think it is that easy and that there has to be some other factors to go along with the lighting.
This is not fact or conjecture, just my humble observations.
Now that that is over I think personally that the best lighting I have seen on a tank uses all different types of lighting. This is the bases I am trying to set mine up on, I will have NO actinic for dusk and dawn, PC actinic and 10K for morning and evening lighting, and PC for the afternoon intensity. Oh and now that eLightmaster is controlling my X-10 I will have a moon light bulb that will be phased to match the moon cycle... Now I just need water :D :D
Steve