hammondegge Posted June 19, 2006 Share Posted June 19, 2006 i need to replace 2 Geisseman 20k's 150w bulbs. i really like these bulbs but before i replace them i figured i would see if anyone has had any experience with any other brand that are similar or equal to these, at perhaps half the price? these run about $100 each. FWIW i do not run any supplement lighting on this tank, just two pendants. Link to comment Share on other sites More sharing options...
thedude Posted June 19, 2006 Share Posted June 19, 2006 Ok I've run the Giesseman 20k DE bulb as well. I noticed a nice blue color with a small hint of white and excellent coral color. However, I also noticed absolutely no growth for 8 months and a huge spectrum shift on the bulb at 6 months. I think I'd recommend three different bulbs to try. The first would be the Phoenix 14k (Chinese made version of the very expensive Aquaconnect 14k) as it is very blue and also gives good growth. The Hamilton 14k would be my second choice as it also is a very good 14k bulb but I do like the Phoenix bulb more. The final suggestion would be the Reeflux 12k as this bulb would show you growth that absolutely blows the giesseman out of the water. It's white with a good hint of blue but definitely brighter and less blue than the Giesseman. Fishypets runs 2 400w 12k reefluxs on his tank and I really like the color. John Link to comment Share on other sites More sharing options...
xcreonx Posted June 19, 2006 Share Posted June 19, 2006 I second the Phoenix 14k. I used the Aquaconnects 14k for many years and loved it. Kept blue torts blue! Nice crisp blue-white. I still have the bulb (the A.C. 14k) if you wanted to try it out but it's 250w. Link to comment Share on other sites More sharing options...
hammondegge Posted June 19, 2006 Author Share Posted June 19, 2006 thanks guys, i think i may try the phoenix. i dont believe the reeflux 12k is avail in DE. i should call frederick though and check. Link to comment Share on other sites More sharing options...
thedude Posted June 20, 2006 Share Posted June 20, 2006 As per and email from David the Coralvue guy, the 12k is out for DE. FWIW Link to comment Share on other sites More sharing options...
thedude Posted June 22, 2006 Share Posted June 22, 2006 Which bulb did you decide to go with Robert? Link to comment Share on other sites More sharing options...
hammondegge Posted June 22, 2006 Author Share Posted June 22, 2006 i ordered the phoenix. thanks for all the input. Link to comment Share on other sites More sharing options...
xcreonx Posted June 23, 2006 Share Posted June 23, 2006 Nice. You won't be disappointed! BTW, the Anthelia frags are doing great! Thanks again! Link to comment Share on other sites More sharing options...
mburton Posted June 25, 2006 Share Posted June 25, 2006 I think the phoenix 14K will be my next bulb too. I had a 20K AB bulb over my tank before and also noticed little growth. Could've been many other things as that tank wasn't the best set-up for SPS (flow- problems). Link to comment Share on other sites More sharing options...
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