Hate to say it but those bulbs aren't the best for growing plants. The 10,000k ones could be usable in a pinch (not great), but the actinic bulbs are completely worthless for good plant growth. ~6,500K are great (blue) bulbs for general plant growth and is what I use. Lower kelvin bulbs such as 3,000-4,000k (red) bulbs can be used to stimulate flowing but again usually worthless for a plant tank unless mixed them with blue bulbs for a full spectrum effect. I'd say get the 6,700 one you are looking at if you want to have a nice planted tank setup with good growth. Most plants love an acidic tank, my planted tanks (non discus) get to nearly 5.0 pH sometimes when I am trying to have fast plant growth due to the Co2 injection.