Here is an observation I made in the comparative review that should make you feel happy about your Solana Orb!
I also made a few observations when looking at the numbers and discussing some issues about the possibility of upgrading to a 250watt system:
A new Phoenix 14K lamp with RF 150 watt ballast/PFO pendant = 27,000 LUX
13 Month old Phoenix 14K lamp with RF ballast/PFO Pendant as tested in the review = 25,500 LUX.
10/3/06 I tested the LUX of new lamps installed. These are Phoenix 14K lamps powered by an RF ballast and PFO pendant. I owned a 150 watt version for the nano and two 250 versions for the 110 tall tank.
Results:
250watt #1 = 32,500 LUX
250watt #2 = 31,500 LUX
150watt = 27,000 LUX
Taking the average of the two 250watt systems at 32,000 LUX, that equates to a 15% greater intensity over the 150watt system.
That is not very much in my estimation and considering the cost of change over and paying for electricity, I do not consider it a good investment, unless you have a tank deeper than 20". My PROP tank is only 13 inches deep and I have a 3 inch sand bed, so I am happy with the 150watt version.
Another Observation:
The new Phoenix 14K lamp on a RF 250watt ballast and PFO pendant produces 32,000 LUX.
The 13month old 14K lamp on a 150watt Sunpak ballast and Solana pendant produces 38,000 LUX. With the RF ballast it produces 45,000 LUX. That is an increase in Intensity by 16% and 29% respectively.
Therefore, if you really want to make a good upgrade, consider changing to a higher efficiency pendant system before upgrading to a 250watt ballast. It will cost less and may deliver more intensity, depending of what you are currently using. I have obviously only test the PFO and Solana pendant, but wish I had access to a few other makes and models.
I would like to see more studies done comparing pendant systems. I think we are on to something here.
I completed the testing of the Radium lamp and will post results in the other thread. I will also comment about the lamp color.