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Group: Forum Members
Last Login: 9/11/2006 6:43:41 PM
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| Anthony, I think I have seen you mention that 150watt DE 10000K halides is all the light you really need for tanks even up to 24" in depth. My question is, would a 2x150watt 10000k setup be sufficient for keeping clams on the sand bed of a 24" deep tank?
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Group: Moderators
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Yes, because the clams like generally are placed on the sand (squamosa and derasa) do't require tremendous lighting. And, a crocea or maxima placed on the rockwork halfway up (or halfway down, your choice  ) would be fine under those lights as well. Assuming of course that you are using good reflectors and a high PAR lamp.
Steven Pro, yeah that is my real name.
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Group: Moderators
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| yup... agreed with Steve's (well said) comments. I'd add the Tridacnid genus "Hippopus" to the list of good candidates.. maybe better as it has a prettier shell (IMO) and more importantly... is slower growing (derasa clams are fab... but fast growing and too large for most aquaria long term at 24" long)
. Anthony Calfo
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Group: Forum Members
Last Login: 3/18/2007 1:33:55 PM
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| Steven, I have the Corallife brand light on my 90 AGA. It has 2 150 watt double ended MH lights in it and 2 ea. 96 watt actinic lights. It is the stock MH that came with the fixture. Can you recommend the proper high par bulb to replace the stock units with? Regards, Pat
90 Gallon AGA Reef Ready
120 LBS Liverock
Euro-Reef RS-100 Skimmer
2 Clarki Clowns
30 Gallon Sump
2 Maxi Jet 1200 Powerheads
2 Seio 1100 Powerheads
RowaPhos Reactor
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Group: Moderators
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Take a look at Sanjay Joshi's test data compiled in this website,
http://www.reeflightinginfo.arvixe.com/It is a great resource of information to compare lamps.
Steven Pro, yeah that is my real name.
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Group: Forum Members
Last Login: 9/11/2006 6:43:41 PM
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| I'm using the Coralife Aqualight PRO over a 90 as well and I am not 100% convinced that 2x150 will be enough light over this deep of a tank, at least with the included reflectors in the Aqualight Pro. Recently I retro fitted some 250watt sockets into the fixture and ran it this way for two months before the glass shields shattered  . During that time my corals extended thier polyps much broader and I saw quite a bit more growth than I did with the 150s. I was running Phoenix 14K bulbs in both the 150watt and 250watt config. The 150 bulbs have a fairly low par of 37 compared to the 80 something of the 250watters. Since the glass shields broke I've rewired it to 2x150 and installed the Coralife 10Ks that come with the fixture. They seem to have quite a bit mor PAR than the Phoenix 150s but my Frogspawn and Clams are not opening nearly as full as when I was running the 250s. I'll run with these lights as long as I do not see a decline in the health of the Corals and the two clams I have. I may end up switching back to 2x250 setup when I can buy some real pendandts, I'll keep everyone posted.
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Group: Forum Members
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| Another quick question, does anyone know if it is more efficient to run the DE bulbs perpendicular to the front and rear of the tank instead of parallel? Parallel setup: --------------------------- rear --- --- --------------------------- front Perpendicular setup: ---------------------------- rear | | ---------------------------- front
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| Hmmm... some (potentially significant) influence here by the shape and orientation of the reflector if not symmetrically parabolic, but... the old stand-by advice is to mount the lamp perpendicular to the long sides of the aquarium, FWIW.
. Anthony Calfo
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