All lights for all my tanks are DIY LEDs. Just buy a 12V 6500K led strip, stick it to a piece of aluminium profile, solder to a 12V power supply and you're done. If you want to get fancy, you can add color strips (Red, Blue or RGB). Low light, high light, never had a problem growing plants or keeping fish alive. Just don't buy those old 5050 strip for the main light. Get something like SMD3014 or SMD2835. For the color strips it doesn't matter, it's just for looks. As for intensity, for low light I suggest something like 600-900 lumen/meter and a cheap manual dimmer to tune it down for your needs.
All this applies for lights above the tank! If you have one of those sets with plastic covers, don't put these led strips inside, it will rust from the high humidity. You can get IP67 led strips, but they usually don't last that long due to heat issues from the insulation.