What made you pick that bulb, Jon? Did you read the latest 400W mogul tests and pick from there? There looks to be some good choices in the 13-14K range too.

best bulb I even used, but they were about 180 each when I got used to the SA bulbs. forwhats its woth the SA bulbs are almost as high in PAR as the AB's but the AB's have a touch more blue to them..

Steve

Alan, I picked that bulb because most people said they liked the blue color. That's it. :lol:

I'm fairly happy with the sun aquatic/ radium combo but wanted a little more blue without adding more actinic's than my current T-5.

Also my bulbs need replacing soon. Not sure weather to replace my 1 year old radiums or replace my 8ish month old Sun aquatics. :confused:

I am going to do some comparason tests on my 9 month old SA's in the next week or two to see how much they have actualy dropped off in PAR output.

Steve

I really look foreward that those results Steve! :biggrin:

Does anyone know where to find those type of reslults for Radiums?

I use 2x250W AB mogul version bulbs, run on PFO Lighting HQI ballast, together with VHO actinics to get desired coloration on my 90gal. I got mine from here where they had these on sale a few months ago. Bulbs were very well packed, actually double-boxed and arrived in perfect condition.

Why not a Hamilton 14k if you want a little more blue?

Walter

people are not understanding what a little more blue is for the AB's. befor everyone thinks that an 10K AB is blue let me state it isn't. it is more like a crisp white with no hint of yellow or green. the actual color temp for the AB works out to ~13000K where the SA 14K bulbs in my test were actualy around a 17000K color temp. so you can see the AB isn't blue but it does have just enuf blue in it to make your color in the tank POP with out making the tank look blue.

Steve

Very well said Steve.