Here, I have some questions.

I don't need to do it until I actually plant the tank, but how does one go about splitting pups off of a bromeliad?
Will the springtails breed in those conditions, or would I need something more?
For the million hearts cuttings, I basically took the cut ends and stuck them into ABG mix in a flower pot. I'm not sure if this is actually how you would go about this, because I've never really had to deal with cuttings. A couple of weeks ago, I cut a leaf from a pothos plant and stuck it in some potting soil, and it hasn't died off, so that's basically all my experience, lol.

I've also been really thinking about the water section of the tank, particularly in the water to land transition. I've seen tanks where the soil seems to just merge perfectly with the water, and I'd love to somehow do that. Also, I'm not too keen about having an egg crate wall being seen through the water, so I got to thinking. What if I great stuffed the whole egg crate wall besides one little crack/section, so that the water could get through to the rest of the tank. Then, I could just silicone and coco fiber it like normal. Is this feasible? Suggestions, ideas, and critiques are welcome.