They definitely all females judging by their cloaca. I hope to add a male some day.

The sand is CaribSea Moonlight sand, it's pure white and the smallest/smoothest grain sand I could find. It's very nice but it kicks up easily and I think it may be the cause of my never ending diatom problems. I think when I get a larger tank I will be using the next step up sand from CaribSea as far as granule size which is Sunset Gold (I use this in another tank, also good sand). I get the feeling my sand is more for a marine aquarium but the pH has been a stable 7.4 but I do get the feeling it does leech silicates, the frogs haven't minded though I just need to clean it with my magnetic glass cleaner. My other tank does not have diatoms (I battle green hair algae on that tank lol).

The lights are a Finnex 36" DS LED strip. It's very bright, I used a plastic sheet (like the ones used under florescent lights) to diffuse the light so the frogs vision is not impaired. Sadly half the strip stopped working today so I had to use an auxiliary light from another tank until I replace or get it repaired.. so there's a 24" Finnex strip on there now, which should be enough light to at least keep the plants alive.

Thank you for all the compliments!