I just joined the 21st century this weekend, as I bought 2 tissue culture containers with Cryptocorynes. I'd always assumed there'd be one plant per container, but I got 5 of one and 3 of the other - a great deal considering it was $10 cad a pot. I can see this pretty rapidly getting out of hand.
I've never wanted to collect inanimate objects, but things that do attract me. Things where I have to be active, solve problems and work at pull me in like a moth to a flame. Aquatic plants were difficult with incandescent and fluorescent lights, but the right LEDs make them far easier, Assuming these plants take, I can spread them out, and slowly add as I go along. MPS is just common sense!