I was looking at a hanging pendent from arcadia 3 X 150 MH. They are the best lights I have come across but it would have set me back over £650.00.
And they do look really cool – It was a hard decision not to opted for the MH cost played a big part – but then I had to take into account my tank is in the main living room and I didn’t want a large powerfully light hanging just about the tank and secondly I do keep fish I am sure 450watt would have been uncomfortable for them – I only wanted to upgrade the wattage – I have been having some problems with plant growth and have ruled out most things apart form WPG which I now know for my tank is below 1.9watt per gallon. This solution allowed me to either purchase in stages to help spread the cost or a one off payment of £300
The only down side to t5 is the number of tubes available but I understand after talking to arcadia that there new plant pro t5 is a mixture of the freshwater t8 and tropical t8 tube they sell- so I am going to try 6 of them and 1 bright white t5