Which bulbs that you use does play a part in it but not that big of a part.
There are about 4 types of fixtures for that 30" tank so which is it ?
24" or 30" bulbs ? T5HO or T5NO ?
If it is an NO fixture it may not give you any algae problems though you may need to shorten how long you use it each day.
The HO fixture, and more so/w the 30 bulb one, will give you problems/w algae unless
you A have lots of plants and injected CO2(DIY may be enough) or B you cut the light
by either or both of raising it up or shorter hrs of use per day.
Placing window screen between the bulbs and top of the tank also will reduce it.
No doubt you will get many suggestions on brand/type of bulbs so I'll put in my
2 cents and say that if you did get a fixture that takes 24" bulbs you will get good
plant growth and light with as little glare as possible with one each of these.
As long as there is a window in the room without a curtain, the fish need no other
light. You can therefore use only 6 hrs of light from that mega fixture till you new one gets there.