Hi Paul and welcome.
I've moved this thread to the Lighting section as it is more appropriate for your question.
Regarding your query, I really think that you should abandon your attempt to replace the stock lighting in your tank with something stronger, at least for now.
Strong lighting almost always results in algal blooms unless strict attention is paid to other, more important factors such as CO2 and nutrition.
In my opinion, you should first learn to grow plants using the lights that you already have. The watt per gallon so-called rule has ruined many a tanks so I suggest that you ignore that number. Also color temperature is completely irrelevant. There is a sticky in this lighting section showing comparison photographs of different color temperature bulbs. Use color as an artistic parameter, not as a technical parameter.
Browse the forum, especially the tutorial section and learn about CO2, flow aquascaping and plant maintenance. These subjects are thousands of times more important than what color bulb you have.
This will greatly simplify your life and will reduce stress.
Cheers,
