[Delphinus]

I've not heard many good things about 10000K bulbs in any brand in the 250W size. I shouldn't say that. What I mean is, I've known a few people to be disappointed after switching to 10000K's in the 250W size (Deb switched from 14000K [then switched back, what, about 6 hours later]. :P And DJ88, who was switching from 250W Iwasaki! You'd think it'd be the other way around.) I've heard good things about the 400W size (DJ88 switched to 400W 10000K and LOVED it, I saw his tank in person and agree the colour was sweet). I know I love my 175W 10000K's and I just run them on typical Phillips M57 ballasts which I picked up from HD at what ... $30 a ballast or whatever silly deal it was (boy I wish they still sold MH ballasts ... I notice they still sell HPS ballasts but I guess us aquarists cleaned them out on their MH stock). Not the least bit of yellow (in my opinion). Granted, it's not as blue as Deb's tanks, it's more of a "crisp white" colour. In my opinion, anyways. For all I know I'm colour blind .... 8)