I think a Catalina 3 bulb T5HO on it's legs is considered High light. I feel the tank is low tech, no co2 only root tabs when the swords start to get holes in the leafs. Very low maintenance, just feed and top-off. No algae problems with the heavy planting.
Although T5HO are bright, I doubt you're registering high light at the bottom of your tank (with those plants its probably even the entire bottom half).
Even in your picture, its pretty clear that is fairly dark at the bottom.
In any case, i don't mean to distract anyone from the gorgeous tanks, including yours 1aqumfish!
Thanks for sharing.